You’re on cycle.
You feel good. You’re gaining. Everything looks fine.
You also have no idea what your lipids are doing.
Here is how to actually read bloodwork while on a steroid cycle — and what numbers mean you need to stop or adjust.
Last Updated: March 2026 | Coach Angelo
Why Bloodwork on Cycle Matters
Steroid cycles suppress natural testosterone, elevate estrogen, alter lipids, increase hematocrit, and stress liver function. Without monitoring, you discover problems post-cycle when damage is done. Bloodwork during cycle allows real-time adjustment to protect your health.
The single most common mistake: running a full cycle without bloodwork. You feel fine, the gains are there, so you assume everything is fine. Post-cycle, lipids are destroyed, hematocrit is elevated, and you spend months recovering.
Key Markers to Test During Cycle
Lipids (Cholesterol Panel)
Total cholesterol: Normal <200mg/dL. On cycle: 200–250 is acceptable. >250 is elevated. >300 means dose reduction or cycle end.
LDL (bad cholesterol): Normal <100mg/dL. On cycle: 100–150 acceptable. >150 is high. >200 means intervention required (fish oil, niacin, or reduce dose).
HDL (good cholesterol): Normal >40mg/dL (men). On cycle: Often drops to 25–35mg/dL. This is THE problematic change. HDL <25 is severe cardiovascular risk. Increase aerobic activity, add niacin 1–2g daily, consider dose reduction.
Triglycerides: Normal <150mg/dL. On cycle: Can rise to 200–300+. Manage with fish oil, niacin, low refined carbs. >300 requires intervention.
Hematocrit
Normal: 40–50%. On cycle: Often rises to 50–55%. >55% means too many red blood cells — increases clotting risk. Donate blood or reduce dose. <40% at baseline is low.
Testosterone, LH, FSH
Total testosterone: On cycle, expect 1500–3000+ ng/dL depending on dose. Normal is 300–1000. Exogenous testosterone suppresses natural production to near-zero.
LH and FSH: Expect very low or zero on-cycle. This is expected — negative feedback from exogenous testosterone. Post-cycle, these should recover (PCT stimulates them). If they don’t recover 8 weeks post-PCT, consult a physician.
Estradiol
Normal: 15–35pg/mL. On cycle: 30–80pg/mL is typical (higher than normal due to aromatization). >80 causes water retention, gynecomastia risk. Reduce aromatase inhibitor dose or increase AI slightly. <15 (crashed E2) causes joint pain and ED — reduce AI.
Liver Enzymes (ALT, AST, GGT)
Normal: <35 IU/L each. On cycle: Can rise 50–100% above baseline, especially if oral compounds are used. Testosterone alone causes modest elevation. Orals (dbol, anadrol, var) cause significant elevation. >150 IU/L requires intervention: reduce oral dose, increase liver support (NAC, milk thistle), recheck in 2 weeks.
Prolactin (If Using 19-Nors or Trenbolone)
Normal: <15ng/mL. On trenbolone or nandrolone: Can rise to 20–40ng/mL. Manage with caber (cabergoline) 0.25–0.5mg twice weekly. >40 requires dose reduction or caber increase.
Timing of Bloodwork During Cycle
Week 4: First bloodwork. Testosterone should be rising (not yet at steady state). Estradiol and hematocrit begin to elevate. Use this to adjust AI dose if needed.
Week 8: Testosterone at steady state. Lipids begin to show impact. Hematocrit elevated. Liver enzymes if orals are included. Adjust doses if needed.
Week 12 (or end of cycle): Final snapshot. Lipids, hematocrit, liver enzymes, testosterone levels confirm the cycle’s metabolic impact. Use this to plan PCT.
Red Flags During Cycle
LDL >150 + HDL <25: Severe lipid dysregulation. Cardiovascular risk is real. Add niacin 2g daily, fish oil 4g daily EPA/DHA, low refined carbs. Recheck in 3 weeks. If unchanged, reduce or end cycle.
Hematocrit >55: Donate blood 1 pint (500mL). Recheck hematocrit 4 weeks later. If elevated again, reduce dose or discontinue.
Liver enzymes >150 IU/L (ALT/AST): If non-oral cycle, this is surprising — recheck, rule out error. If confirmed and no oral compounds, reduce injectable dose. If oral cycle, immediately reduce or stop orals. Add liver support (NAC 2g daily, milk thistle). Recheck in 2 weeks.
Estradiol >80: Water retention, mood disturbance, gynecomastia risk. Increase AI dose by 0.25–0.5mg daily. Recheck at week 12. Do not let E2 run away.
Estradiol <15: Crashed E2. Joint pain, ED, mood crash. Reduce AI immediately (cut dose by 25–50%). Recheck at week 12. Low E2 is as problematic as high E2.
Post-Cycle Bloodwork
Week 4 post-cycle (after PCT): Testosterone, LH, FSH should be returning to baseline. If not, you may need extended PCT or medical evaluation. Lipids should be improving. Hematocrit normalizing. Liver enzymes dropping.
Week 8 post-cycle: Full panel. Testosterone should be 300–700ng/dL (normal). LH and FSH in normal range. Lipids recovered. Hematocrit normal. Liver enzymes normal. If any are still abnormal, consult a physician.
Where Most Get It Wrong
No bloodwork during cycle. You feel fine, so you assume you are fine. This is guess work. Lipids, liver, and hematocrit damage silently. Check at week 4 and week 8 minimum.
Not knowing your pre-cycle baseline. Bloodwork at week 4 is high — is that from the cycle, or was it already elevated? Get pre-cycle bloodwork. Compare.
Ignoring elevated hematocrit. “It’s just red blood cells.” High hematocrit increases clotting risk. Donate blood. Do not ignore.
Running extreme lipid destruction without intervention. LDL >200, HDL <20 and you continue the cycle. You will face cardiovascular consequences post-cycle. Intervene NOW or end the cycle.
Coach Angelo’s Assessment
Bloodwork during cycle is the difference between informed decisions and blind hope. Check at week 4 and week 8. Use the data to adjust or stop. Post-cycle bloodwork confirms recovery. This is standard medical practice, not optional gatekeeping.
Frequently Asked Questions
How often should I test bloodwork on cycle?
Minimum: week 4 and week 8. Ideally: every 4 weeks. More frequent testing = more data = better optimization. If adjustments are made (AI dose, cycle end), retest 2 weeks after.
Can I just feel my way through without bloodwork?
No. Lipid destruction, liver stress, and hematocrit elevation are silent. You feel fine while damage accumulates. Bloodwork is mandatory.
What if my bloodwork is bad?
Reduce dose, add support (fish oil, niacin, liver support), or end cycle. Do not continue at same dose if bloodwork is terrible.
Is lipid damage permanent?
No. Post-cycle, lipids normalize within 4–12 weeks with good diet and activity. Damage is temporary if you monitor and intervene during cycle.
Should I donate blood if hematocrit is high?
Yes. High hematocrit (>55%) increases clotting risk. Donate 1 pint (500mL). Recheck 4 weeks later. If elevated again, reduce cycle dose or stop.
What liver support should I take?
NAC (N-acetylcysteine) 1–2g daily, milk thistle 300–600mg daily. These support liver function and enzyme stability. Take throughout cycle, especially if using orals.
Coach Angelo is an online physique coach based in Europe, specialising in peptide protocols, steroid cycle design and evidence-based enhancement. He has coached 80+ client transformations. Work with Angelo →