Bloodwork Monitoring Guide

Bloodwork Guide

Know what your bloodwork is really telling you

A practical guide to bloodwork for enhanced athletes. It covers what to test, when to test, how to prepare, how to read your results, what is urgent versus normal, and how to act on your numbers.

About a 13-minute read

When to test The complete panel Reading results Urgent vs common Organ support FAQ

Why bloodwork matters

If you use performance-enhancing compounds, bloodwork is not optional. It is how you check what is happening inside your body. Steroids, SARMs, growth hormone, and peptides all change how your organs work – they raise hormones, alter cholesterol, and thicken blood. You can feel fine and still be heading for problems.

Bloodwork shows what is real. It is not about guessing – it is about data. But it is important to understand exactly what it can and cannot tell you.

What a blood test CAN show

The stress your body is under right now
What you can act on today – meds, doses, lifestyle
Early warnings while they are still fixable

What it CANNOT show

The damage already done over the years
Plaque built up in your arteries
Needs a heart scan, not a blood test

A blood test is a snapshot of right now. It shows the stress your body is under today, which is useful because meds, compounds, and lifestyle changes move those numbers. What it cannot show is the damage already built up from years of cycles. A clean panel today does not undo past abuse, and “everything looks normal” is not a green light to blast again. Seeing real accumulated damage takes imaging like a coronary artery calcium (CAC) score, not a blood draw.

Your baseline is everything

Your first set of bloods – before any compounds – is your baseline. That is your personal normal. You will compare every future test to it. If something drifts far from your baseline, even if it is still inside the lab’s “normal” range, that is a warning.

Doctors often treat lab ranges as universal. They are not. Athletes, lifters, and enhanced users have different physiology. Use your own data as your standard.

Trends matter more than isolated results. A single number out of range does not mean you are in danger. The direction your markers are moving – and how far they have shifted from your personal baseline – tells the real story. Never rely on one test. You are building a long-term picture, not chasing a perfect number.

When to test

Testing at the right times gives you the most useful information. Too early or too late and you miss the window where adjustments can make a difference.

Timing	Purpose	What you learn
Before the cycle	Establish baseline	Your personal normal – the reference point for every future test
Mid-cycle (week 5-6)	Catch early issues	Liver stress, estrogen spikes, haematocrit rise, blood pressure changes
End of cycle	Assess suppression	How suppressed you are before recovery begins
Post-PCT (4-6 weeks after)	Confirm recovery	Whether LH, FSH, and testosterone are back to baseline
TRT / cruise	Ongoing monitoring	Every 8-12 weeks – you are not “off,” so you need consistent monitoring

During heavy cycles, testing every 6 weeks is ideal. After any major change – new compound, dose adjustment, or PCT – retest in 3-4 weeks. As a simple rule, getting full bloodwork around four times a year keeps you on top of your trends.

Without testing, you are flying blind. You can feel strong, look good, and still have dangerously high haematocrit, crashed lipids, or liver enzymes heading in the wrong direction. Bloodwork is the early warning system that gives you time to fix things before they become serious.

The complete panel

Below is everything you should test, organised by system. Not every marker is needed every time – the baseline panel is the most comprehensive. Mid-cycle and post-PCT panels can be shorter.

Hormones

Marker	What it tells you
Total Testosterone (LC/MS)	Total androgen in circulation. Use LC/MS method – standard assays cap at ~1,500 ng/dL (~52 nmol/L)
Free Testosterone	The fraction actually available to your cells. More meaningful than total if SHBG is abnormal. Usually calculated from total and SHBG rather than measured directly
SHBG	Binds testosterone and makes it inactive. High SHBG = less usable testosterone even if total looks fine
Estradiol (E2) – sensitive assay	Estrogen level. Must be the sensitive LC/MS assay – standard immunoassay is inaccurate for men
LH and FSH	Pituitary signals to the testes. Near zero on cycle (expected). Rising after PCT = recovery started
Prolactin	Elevated by 19-nor compounds (Nandrolone, Trenbolone). High prolactin kills libido and causes ED
DHT	Explains changes in libido, aggression, or hair loss. Balance matters – not elimination
Progesterone	Check alongside prolactin if you have used Deca or Tren – they work together
Semen analysis	If fertility matters now or someday, this shows what is actually coming out – count, motility, morphology. Best checked off cycle, alongside LH and FSH

Always use the sensitive estradiol assay (LC/MS). The standard immunoassay was designed for women and over-reads estrogen in men, which leads to unnecessary AI use and crashed estrogen. Ask your lab specifically for the LC-MS/MS sensitive estradiol assay (in the US, that is Labcorp 140244 or Quest Ultrasensitive Estradiol). See our estrogen management guide for details.

On fertility: anabolic use shuts down LH and FSH, and your testes can stop making sperm – sometimes dropping to zero. For many men this recovers with time and a proper PCT, but not always, and the longer and heavier the use, the higher the risk. If kids are even a maybe in your future, check LH, FSH, and a semen analysis off cycle so you know where you stand.

Liver

Marker	What it tells you
AST	Liver AND muscle marker. Training raises it. Not liver-specific on its own.
ALT	More liver-specific than AST but still affected by intense training
GGT	Almost exclusively hepatic. Training does NOT affect it. This is the critical differentiator – if GGT is high, your liver is genuinely stressed
Bilirubin	Waste clearance marker. Persistent elevation = liver under load
Albumin	How well your liver makes proteins. Low albumin = chronic liver stress

The GGT trick: If your AST and ALT are elevated but GGT is normal, the elevation is almost certainly from training – not liver damage. If AST/ALT are elevated AND GGT is also elevated, that confirms the liver is the source. This single distinction prevents unnecessary panic after heavy training weeks.

Lipids and cardiovascular

Marker	What it tells you
HDL	“Good” cholesterol. Steroids crash it – especially oral compounds. Below 35 is a red flag.
LDL	“Bad” cholesterol. Rises on cycle. Above 160 = act.
Triglycerides	Blood fats. Elevated by diet, alcohol, and some compounds
Total Cholesterol	Context marker – the ratio of HDL to total matters most
Blood Pressure	Elevated by water retention (high estrogen) and thick blood (high haematocrit). Measure at home regularly, not just once at the lab

Blood pressure is a daily metric, not a yearly one. It is the easiest cardiovascular marker to track and the one most worth watching. Chronically high blood pressure forces the heart to work harder and can thicken the left ventricle over time. Get a home cuff and check it regularly.

Kidney

Marker	What it tells you
Creatinine	Kidney waste marker – BUT elevated by muscle mass and protein intake. Unreliable in muscular individuals.
BUN	Kidney waste marker. High BUN + falling eGFR = real concern
eGFR	Filtration rate estimate. Calculated from creatinine – will be falsely low in muscular people
Cystatin C	The accurate kidney marker for athletes. Not affected by muscle mass, diet, or creatine. Use this instead of creatinine.

Always request Cystatin C if you are muscular. In lifters, creatinine largely reflects muscle mass rather than kidney function, so it can make your kidneys look worse than they are. Cystatin C is not affected by muscle and gives the true picture.

Blood (haematology)

Marker	What it tells you
Haemoglobin	Oxygen-carrying capacity. Rises on testosterone and EQ.
Haematocrit	Percentage of blood that is red cells. Above 52% = polycythaemia. Above 54% = dose reduction needed.
RBC count	Red blood cell count. Tracks with haematocrit.
WBC count	White blood cells. Monitors immune function and infection.

Snore at night and on testosterone? Get checked for sleep apnea. Androgens raise red blood cell production, and sleep apnea raises it too – so a large guy with undiagnosed apnea gets a double push on haematocrit and often has no idea. If you snore heavily or wake unrested, an apnea assessment can fix a haematocrit problem at its source.

Thyroid

Marker	What it tells you
TSH	High TSH = thyroid working harder than normal
Free T3	Active thyroid hormone. Low = metabolism slowed (from stress, poor sleep, diet, GH use, or long cuts)
Free T4	Thyroid storage hormone. Converted to T3 as needed.
Reverse T3	The inactive form. Rises during hard dieting and long cuts, when T4 converts to reverse T3 instead of active T3 – explains feeling flat and cold on low calories

Test thyroid markers if you use growth hormone, MK-677, or peptides, or if you notice unexplained fatigue or metabolic slowdown.

If you have ever run T3 or T4 in prep, check your TSH – even years later. Repeatedly cycling thyroid hormone across a competitive career can suppress your own thyroid axis, and some former competitors end up hypothyroid long after they stop. It is a cheap test that can explain lingering fatigue, weight gain, and hair loss nobody thinks to connect to thyroid.

Glucose and insulin

Marker	What it tells you
Fasting Glucose	Above 100 mg/dL (5.6 mmol/L) = insulin resistance building
HbA1c	3-month glucose average. Above 5.7% = pre-diabetic range
Fasting Insulin	If high while glucose is normal, you are compensating – early-stage resistance, the first marker to move

Particularly important if using growth hormone, insulin, or MK-677 – all of which push you toward insulin resistance over time. Fasting insulin is the earliest warning: it climbs before glucose and HbA1c do.

Additional markers

PSA – prostate health. Important for long-term androgen users, especially over 40.
CRP – systemic inflammation. High CRP = poor recovery, overtraining, or diet issues.
IGF-1 – growth hormone activity. Test if using GH or GH-secretagogue peptides. If your IGF-1 has not moved, your GH may be underdosed or fake.
Cortisol – stress and recovery marker. Chronically high = under-recovering.
Ferritin – iron storage. Important if donating blood regularly for haematocrit management.
Vitamin D3 – supports hormone function. Deficiency is common and affects testosterone.
Electrolytes (sodium, potassium, magnesium) – affected by water retention, diuretics, and sweating. Imbalances can trigger dangerous heart rhythm problems, especially during a dehydrated peak week.

How to prepare

Small details change results more than most people realise. Keeping conditions consistent every time you test is what makes your results comparable and useful.

Before the blood draw

Fast for 8-12 hours – water is fine and encouraged (keeps veins fuller, makes the draw easier). Required for lipid panel, fasting glucose, and insulin.
No training for at least 48 hours – ideally 72 hours. AST and ALT stay elevated for days after heavy lifting. If you are testing liver enzymes specifically, a full week off training gives the most accurate reading.
Test in the morning – before 10am. Testosterone is highest in the early morning and drops throughout the day. Afternoon testing gives artificially lower readings.
No alcohol for 24 hours – alcohol directly elevates liver enzymes and GGT.
No caffeine before the draw – can affect cortisol and glucose readings.
Stay hydrated – drink water normally. Dehydration concentrates blood and artificially raises haematocrit and other markers. Turning up dehydrated does not give a “truer” reading, it gives a falsely high one.

Supplements to pause

Biotin (Vitamin B7) – interferes with many immunoassays. Can falsely lower TSH and falsely elevate testosterone, estradiol, and free T4. Stop 48-72 hours before testing.
Creatine – elevates creatinine readings, making kidney function look worse than it is.
High-dose Vitamin C and E – can affect certain oxidative stress markers.

Injection timing

If you are on injectable testosterone, draw blood at trough – the morning of your next injection, or the day before. This gives the most clinically useful reading. Drawing at peak (the day after injection) gives an artificially high number that does not reflect your average levels.

Consistency protocol

For meaningful comparison between panels:

Same lab and same assay method every time
Same time of day
Same fasting duration
Same rest period from training
Same point in injection cycle (trough vs peak)

Reading your results

Do not panic over single numbers. Enhanced users run slightly outside clinical ranges – that is expected. Focus on direction, not perfection. If something trends wrong, act early.

Hormones

Total and Free Testosterone: After a cycle, low test means your body is still suppressed. If both are low, you have not recovered. If Total is high but Free is low, SHBG is binding too much testosterone – common after high estrogen or liver stress.
Estradiol (E2): Keep it balanced, not crushed. Low E2 feels worse than high: dry joints, no libido, flat mood. High E2 shows up as bloating, nipple sensitivity, or water retention. Adjust AIs slowly and retest in 2-3 weeks. See our estrogen management guide.
LH and FSH: Both near zero = pituitary still shut down (expected on cycle). Rising after PCT = recovery started. If LH is high but testosterone is still low, the testes are not responding yet.
Prolactin: Elevated prolactin kills libido, causes fatigue, and can cause ED. If you used Deca or Tren, check both prolactin and progesterone. Fix with P5P or Cabergoline if needed – but confirm with labs first.

Liver

AST/ALT elevated + GGT normal = training artifact. Not liver damage. No action needed beyond rest.
AST/ALT elevated + GGT elevated = confirmed liver stress. Support with TUDCA or NAC, reduce or stop oral compounds, and retest in 2 weeks.
Persistent elevation above 80 U/L for more than a few weeks = take a break from oral compounds, use liver support, and retest after a rest week.

Lipids

HDL drops and LDL rises on every cycle – this is expected. The goal is to minimise how far it shifts.
HDL below 35 or LDL above 160 = act. Fish oil, citrus bergamot, niacin, and regular cardio help stabilise lipids.
Avoid stacking multiple DHT-based orals – they crash HDL fastest.
Lipid improvement usually lags 1-2 months behind your changes.

Kidney

Slightly high creatinine is normal in lifters – muscle mass and protein intake raise it regardless of kidney function.
What matters is the trend. If eGFR keeps dropping, that is real strain.
Use Cystatin C for accurate assessment. It is not affected by muscle mass.

Haematocrit

Above 52% = polycythaemia. Blood is getting thick.
Above 54% = consider blood donation and dose reduction.
Above 60% = urgent. See a doctor immediately.
Donate blood, hydrate, and recheck in a month. If it keeps creeping back up, rule out sleep apnea.

Thyroid

High TSH or low Free T3 = metabolism slowed down. Can come from GH use, fatigue, overtraining, or prolonged calorie restriction.
Fix lifestyle before medication: food, sleep, and recovery.

Glucose

Fasting glucose over 100 mg/dL (5.6 mmol/L) or HbA1c over 5.7% = insulin resistance building. Common with GH, MK-677, or high-calorie phases.
Lower carbs, increase cardio, consider berberine (500-1,000 mg/day).
If insulin levels stay high while glucose is normal, you are compensating – that is early-stage resistance, not health.

Urgent vs common

Not every out-of-range result requires immediate action. The difference between urgent and common is trend – if it keeps moving the wrong way, common becomes urgent.

Urgent – act now

AST/ALT above 3-5x the upper limit AND GGT also elevated – confirmed liver stress. Stop oral compounds.
Haematocrit above 54% – donate blood, lower dose, increase hydration
eGFR dropping below 60 (confirmed with Cystatin C) – real kidney strain
Blood pressure over 140/90 consistently – cardiovascular risk, investigate cause
HDL under 30 with LDL above 180 – significant cardiovascular risk
Estradiol over 80 or under 10 pg/mL (roughly 290 or 37 pmol/L) – hormonal imbalance requiring adjustment
Prolactin more than twice the upper limit – investigate, consider cabergoline
Jaundice, dark urine, or severe itching – emergency evaluation needed

Common – watch, do not panic

Mildly high AST/ALT after training – normal training artifact if GGT is fine
HDL slightly low – expected on cycle, manage with cardio and supplements
Glucose around 95-100 after a bulk – borderline but not alarming in context
Haematocrit near 50-52% – elevated but not yet dangerous. Monitor.
Slightly high SHBG – can trap testosterone post-cycle but usually resolves
Slightly elevated creatinine – expected in muscular individuals. Confirm with Cystatin C.

The difference is trend. A single borderline result is not an emergency. The same result getting progressively worse over 2-3 tests is a pattern that requires action. Track your numbers over time – direction matters more than position.

Organ support

Prevention is better than reaction. These are practical approaches to supporting the organs most affected by anabolic compound use.

Liver support

Supplement	Dose	When to use
TUDCA	500-1,000 mg/day	During any oral steroid cycle. Strongest support for AAS-induced cholestasis specifically. Do not exceed 1,500 mg/day.
NAC	600-1,200 mg/day	General liver support, year-round. Glutathione precursor and direct antioxidant.
Milk Thistle (Silymarin)	420-700 mg/day	Additional support. Milder than the other two but useful alongside them.

Avoid alcohol during oral steroid use. Rest from orals if enzymes stay elevated. Retest after a week of reduced stress.

Lipid support

Intervention	Detail
Citrus Bergamot	500-1,500 mg/day. Can meaningfully lower LDL; works in a statin-like way.
Omega-3 (Fish Oil)	2-4 g EPA/DHA daily. Most effective for triglyceride reduction and cardiovascular inflammation.
Niacin (B3)	1-3 g/day. Raises HDL, lowers triglycerides. Causes flushing at therapeutic doses, and gram doses can stress the liver – use cautiously and not alongside heavy oral cycles.
Cardiovascular exercise	3-5 sessions per week. The most effective non-pharmacological HDL booster.

Limit oral steroid cycles to 4-6 weeks for harsh compounds. Prefer injectables when possible – they have less lipid impact because they bypass first-pass liver metabolism.

Blood (haematocrit) management

Intervention	Detail
Therapeutic phlebotomy / donation	~500 mL lowers haematocrit by roughly 3%. Every 8 weeks, up to 6 times per year. Manage a genuinely high haematocrit with a doctor, not guesswork.
Treat sleep apnea	If undiagnosed apnea is driving haematocrit up, treating it addresses the cause rather than the symptom.
Hydration	Adequate water intake maintains plasma volume. Dehydration artificially concentrates blood.
Dose adjustment	Lower testosterone dose or switch to more frequent smaller injections for more stable levels.

Kidney support

Stay hydrated – the simplest and most effective kidney protection
Control blood pressure – hypertension is the leading cause of kidney damage in enhanced users
Telmisartan – angiotensin receptor blocker with kidney-protective properties (prescription, discuss with a doctor)
Astragalus root extract – traditional kidney support with some evidence for renal protection
Retest in 4 weeks after any intervention

How to act on results

Having the numbers is only useful if you know what to do with them. Follow this framework every time you get results back.

Compare to your baseline. Not the lab’s reference range – your personal pre-cycle numbers. A result inside “normal” that is 50% different from your baseline is still meaningful.
Mark what changed. Highlight anything that moved significantly from the previous test or from baseline.
Identify what caused the shift. Which compounds, doses, or lifestyle factors explain the change? Oral steroids hit the liver. High-dose testosterone raises haematocrit. 19-nors elevate prolactin.
Fix what is fixable. Sleep, food, hydration, cardio, and support supplements resolve most issues. Dose adjustments handle the rest.
Retest in 3-4 weeks. Confirm the intervention worked before making further changes.

Never rely on one test. You are building a long-term picture – not chasing a perfect number. The pattern across 3, 4, 5 tests tells you more than any single result ever could. Keep a log of every panel. Note what you were running, at what dose, and for how long. This becomes your personal database of how your body responds to different compounds.

Frequently asked questions

Do I really need bloodwork for short cycles?

Yes. Suppression and organ stress can start fast, even on short runs. A 6-week oral cycle can crash your lipids and elevate liver enzymes significantly. The baseline and post-cycle tests are the bare minimum.

Can I train before the test?

Rest at least 48-72 hours before. Ideally, avoid heavy training for a full week if you are specifically checking liver enzymes. Intense lifting elevates AST, ALT, creatinine, and creatine kinase for days afterward.

Do I need to fast?

Yes. Fast 8-12 hours before. Water only – it is fine and encouraged. Required for accurate lipid panel, fasting glucose, and insulin readings.

Can I use at-home test kits?

Finger-prick kits are fine for basic testosterone monitoring on TRT. But for comprehensive cycle monitoring, you need a full venipuncture blood draw at a lab. Sensitive estradiol (LC/MS), Cystatin C, and complete panels are not available via finger prick.

What is the sensitive estradiol test and why does it matter?

The standard estradiol immunoassay was designed for women and over-reads in men, giving falsely high readings. The sensitive assay (LC/MS) is accurate at the lower concentrations found in males. Using the wrong test leads to unnecessary AI use and crashed estrogen. Always request the sensitive/LC-MS version.

Why is my creatinine high if my kidneys are fine?

Creatinine production is determined primarily by muscle mass. A muscular lifter will always have higher creatinine than a sedentary person of the same weight – regardless of kidney health. Request Cystatin C for an accurate kidney assessment. It is not affected by muscle mass, diet, or creatine supplementation.

How often should I donate blood?

When haematocrit rises above 52-54%, or every 3-4 months on heavy cycles that include testosterone and/or EQ. One standard donation lowers haematocrit by approximately 3%. Monitor ferritin if donating frequently – iron stores can deplete. If your haematocrit keeps climbing back, get checked for sleep apnea.

Is it normal for HDL to drop during a cycle?

Yes, but control the drop. Oral steroids crash HDL the hardest. Keep HDL above 35 with citrus bergamot, fish oil, regular cardio, and limiting oral cycle length to 4-6 weeks.

What if my results are normal but I feel off?

Test again in a few weeks. Hormones shift quickly, especially during PCT or dose changes. A single snapshot can miss a transient dip or spike. Look at trends across multiple tests, not snapshots. Remember too that “normal now” reflects current stress, not damage already accumulated.

Will my testosterone result mean anything mid-cycle?

Not much for total testosterone – on a blast it is usually above what the assay can even measure, so the number tells you little. Testosterone is most useful to check on TRT or off cycle, alongside LH and FSH, to see how your natural axis is doing.

How do I know my growth hormone is real?

Check IGF-1. The liver produces it in response to GH, so if your IGF-1 has not moved from baseline, your GH (or your secretagogue like MK-677 or a peptide) is likely underdosed or fake. It is the simplest way to confirm you are paying for something that works.

My doctor is concerned about my bloodwork. What do I say?

Be honest about what you are using. Doctors can only help if they know the full picture. Enhanced athletes have different physiology – slightly elevated haematocrit, liver enzymes from training, and supraphysiological testosterone are expected and manageable. A doctor who understands this context will focus on trends and genuine risk factors rather than reacting to individual out-of-range numbers.

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This guide is for informational purposes only. It does not constitute medical advice. Consult a qualified healthcare provider before using any pharmaceutical compounds or interpreting bloodwork results. Not recommended for individuals under 18, those with existing cardiovascular, hepatic, renal, or endocrine conditions, or during pregnancy. For product questions, use the email above.