The PCT Recovery Lab Guide
Bloodwork is the only objective way to know if your PCT is working. Here's exactly what to test, when to test it, and how to read your results using our Red/Yellow/Green recovery system.
When to Get Bloodwork
The 2026 standard calls for three rounds of bloodwork during a PCT cycle. Yes, three. It sounds like a lot, but each one serves a distinct purpose:
1. Pre-PCT Baseline
Drawn right before you start your SERM protocol (after the compound clearance period). This shows you how suppressed you actually are and gives you a starting point to measure recovery against. Without this, you're guessing.
2. Mid-PCT Check (Week 2-3)
This is your progress report. You're looking for LH and FSH to be rising, which confirms your SERM is doing its job. If they're still flatlined, something's off and you may need to adjust your protocol.
3. Post-PCT Confirmation (2-4 Weeks After Last SERM Dose)
The most important one. This tells you whether your HPTA has actually recovered and can sustain testosterone production on its own, without the SERM driving it. This is your "all clear" panel.
The Core Hormonal Panel
This is the bare minimum you need to determine if your PCT was successful. Don't skip any of these.
| Marker | Role in Recovery | Recovered Range (Post-PCT) |
|---|---|---|
| Total Testosterone (LC/MS) | The "output" of your system - what the testes are producing | 400 - 900 ng/dL |
| LH (Luteinizing Hormone) | The signal from brain to testes - "make testosterone" | 2.0 - 9.0 mIU/mL |
| FSH (Follicle Stimulating Hormone) | The signal for sperm production and testicular health | 1.5 - 12.0 mIU/mL |
| Estradiol (Ultrasensitive / LC-MS) | Estrogen balance - critical for mood, joints, and preventing gyno | 15 - 35 pg/mL |
Why "Ultrasensitive" Estradiol Matters
This is a detail that trips a lot of people up. Standard Estradiol tests are designed for women and can be wildly inaccurate for men. The LC/MS (Liquid Chromatography/Mass Spectrometry) assay - often marketed as the "Ultrasensitive" or "Sensitive" Estradiol test - is the only version you should be ordering.
Here's why it matters: standard immunoassay tests can give false-high readings, especially in men with high muscle mass or those who use creatine. A false-high E2 reading leads to one of the most damaging PCT mistakes: taking an AI you don't actually need and crashing your estrogen into the floor. Low estrogen during recovery means joint pain, destroyed libido, tanked mood, and slower HPTA recovery.
When you order bloodwork, make sure it specifically says "Estradiol, Sensitive (LC/MS-MS)" or equivalent. If it just says "Estradiol" without the sensitive designation, it's probably the standard immunoassay and you should request the correct one.
The Recovery Status System
Use this framework to quickly assess where you stand based on your bloodwork results. Think of it like a traffic light for your recovery.
Total Testosterone
Suppressed Below 250 ng/dL
Your system is still significantly suppressed. If you're seeing this post-PCT, your protocol may not have been sufficient. Consult with a doctor about extending treatment or alternative approaches.
Restarting 250 - 399 ng/dL
Your testes are producing testosterone, but levels aren't at a healthy baseline yet. This is normal during PCT or shortly after. Give it time and retest in 2-4 weeks. If still in this range 6+ weeks post-PCT, consult your doctor.
Recovered 400 - 900+ ng/dL
Your testosterone production is back in healthy male range. Combined with good LH/FSH numbers, this indicates successful HPTA recovery.
LH (Luteinizing Hormone)
Suppressed Below 1.0 mIU/mL
Your pituitary isn't sending the signal yet. If this is during PCT, your SERM may not be working effectively. If post-PCT, the HPTA hasn't recovered and medical intervention may be needed.
Restarting 1.0 - 1.9 mIU/mL
The signal is coming back online but isn't at full strength yet. This is expected mid-PCT. Continue your protocol and retest.
Recovered 2.0 - 9.0 mIU/mL
Your pituitary is sending healthy signals to the testes. This is where you want to be post-PCT.
FSH (Follicle Stimulating Hormone)
Suppressed Below 1.0 mIU/mL
FSH is flatlined. Sperm production and testicular function are significantly impaired. This usually recovers alongside LH but can take longer.
Restarting 1.0 - 1.4 mIU/mL
FSH is beginning to respond but hasn't reached healthy baseline. Give it more time - FSH often lags behind LH recovery.
Recovered 1.5 - 12.0 mIU/mL
FSH is in normal range. Testicular function and spermatogenesis are supported.
Estradiol (Sensitive / LC-MS)
Out of Range Below 10 or Above 50 pg/mL
Low E2 (below 10): Your estrogen is crashed. This means joint pain, fatigue, dead libido, and impaired recovery. Stop any AI use immediately and let it recover. High E2 (above 50): Estrogen is elevated and you may be at risk for gyno symptoms. Consult your doctor about whether a low-dose AI is warranted.
Borderline 10 - 14 or 36 - 50 pg/mL
Not critical, but worth monitoring. Slightly low E2 may cause joint discomfort; slightly high E2 isn't dangerous but should be watched.
Optimal 15 - 35 pg/mL
Your estrogen is in the sweet spot. Joints feel good, mood is stable, and there's no estrogenic concern.
Health and Safety Markers
A cycle affects more than just your testosterone. These additional markers tell you if the rest of your body came through okay.
| Marker | Why It Matters | Healthy Range |
|---|---|---|
| Cystatin C | The 2026 gold standard for kidney function in athletes. Standard Creatinine tests are unreliable for people with high muscle mass or creatine use. | 0.53 - 0.95 mg/L |
| ALT / AST | Liver enzymes. Crucial if you ran oral compounds (Dianabol, Anadrol, Winstrol) which pass through the liver. | ALT: 7-56 U/L, AST: 10-40 U/L |
| Hematocrit | Measures blood thickness. Testosterone (especially at supraphysiological doses) increases red blood cell production. | 38-50%. Above 54% is a cardiovascular red flag. |
| SHBG | Sex Hormone Binding Globulin. Binds testosterone and makes it inactive. High SHBG means your "free" testosterone is lower than your total number suggests. | 10-57 nmol/L |
| Lipid Panel | Cholesterol. AAS use (especially orals) can crush HDL and spike LDL. Check that these are normalizing post-PCT. | HDL > 40 mg/dL, LDL < 130 mg/dL |
Practical Tips for Getting Labs
- Fast before your draw: 8-12 hours fasted is standard. This doesn't affect hormone levels much, but it matters for lipids and glucose.
- Test in the morning: Testosterone peaks in the early morning (7-10 AM). Testing later in the day will give you artificially lower readings.
- Be consistent: If your baseline was drawn fasted at 8 AM, do your follow-ups the same way. Comparing a fasted morning draw to a fed afternoon draw is apples to oranges.
- Don't test while still on your SERM: For your post-PCT confirmation panel, wait at least 2 weeks after your last SERM dose. You want to see what your body does on its own, not what the drug is artificially maintaining.
- Always request the LC/MS assay for Estradiol: This bears repeating. "Estradiol, Sensitive" or "Estradiol by LC/MS-MS." The standard immunoassay is not reliable for men.