Testosterone
Also known as: Test, Test E, Test C, Test P, Testosterone Enanthate, Testosterone Cypionate, Testosterone Propionate
Lower numbers = closer to natural. Higher numbers = more enhanced.
Why this rating?
Exogenous testosterone at supraphysiological doses (300-1000mg/week) produces muscle gains 3-5x beyond natural limits. Studies show 600mg/week produces ~3kg lean mass gain in 10 weeks even without training (and ~6kg when combined with training; Bhasin et al., 1996). While testosterone is a naturally occurring hormone, performance doses create hormone levels 4-10x the physiological range, clearly distinguishing users from natural athletes.
Overview
Synthetic versions of the primary male sex hormone and the essential "base" for almost all cycles to prevent the symptoms of low testosterone caused by other suppressive compounds.
Purpose & Use Cases
Foundational Cycle Base
Serves as the foundation for almost all steroid cycles, maintaining physiological function while other compounds are used.
Mass & Strength
Provides significant increases in muscle mass and strength when used at supraphysiological doses.
TRT/Cruise
At 100-200mg/week, maintains normal male hormone function between cycles or as hormone replacement therapy.
Sexual Function Maintenance
Prevents the sexual dysfunction and low libido symptoms that occur when natural testosterone is suppressed.
Benefits
- Significant increase in muscle mass and strength
- Enhanced recovery between workouts
- Improved protein synthesis and nitrogen retention
- Increased red blood cell production for better endurance
- Enhanced libido and sexual function
- Improved mood, confidence, and sense of well-being
Good to Know
It can raise your natural ceiling, even after you stop
A cycle adds myonuclei to muscle fibers, and those myonuclei are retained long after the drugs clear ("muscle memory"). This is why ex-users regain size fast and can hold more muscle naturally than someone who never used. For the natty scale and calculator this matters: a past cycle keeps nudging your "natural" ceiling upward even during fully natural phases.
Testosterone is the one steroid finasteride actually helps with
Because testosterone converts to DHT via 5-alpha-reductase, finasteride/dutasteride can lower scalp DHT and slow hair loss on a testosterone cycle. This does NOT apply to DHT-derivative steroids (Masteron, Winstrol, Anavar, Proviron, Primobolan). Those are already DHT and cannot be blocked.
The base of almost every cycle
Even "testosterone-free" cycles usually keep testosterone at a replacement dose, because other compounds shut down natural production and you still need androgen for libido, mood and wellbeing. Running suppressive compounds with no testosterone is how you get "deca dick" and a flat mood.
Dosage Guidelines
| Route | Typical Dose | Frequency | Cycle |
|---|---|---|---|
| Injectable esters | 500 – 750 mg/week | Long esters (Cypionate/Enanthate) 2x/week; Short ester (Propionate) daily or EOD | 10 – 16 wk |
| Oral Testosterone Undecanoate (Jatenzo / Kyzatrex / Tlando) | 316 – 792 mg/day | Twice daily with a fat-containing meal (absorption is lymphatic and fat-dependent) | 12 – 52 wk |
| Transdermal Gel (AndroGel / Testim / generic) | 50 – 100 mg/day | Once daily (morning), applied to shoulders/upper arms and/or abdomen; let dry fully before dressing | 12 – 52 wk |
| Transdermal Patch (Androderm) | 2 – 6 mg/day | One patch applied nightly for 24 hours; rotate application sites, avoiding the same site within 7 days | 12 – 52 wk |
| Nasal Gel (Natesto) | 33 – 33 mg/day | Three times daily, 6-8 hours apart (morning, afternoon, evening); 2 pump actuations per dose, 1 actuation (5.5mg) per nostril | 12 – 52 wk |
| Subcutaneous Pellet Implant (Testopel) | 150-450 mg per implant | Minor in-office trocar procedure; pellets inserted subcutaneously (typically hip/buttock), re-implanted every 3-6 months as levels decline | 12 – 26 wk |
Dosing depends on how it's administered. Pick your route in the calculator to score the one you use.
TRT/cruise doses are typically 100-200mg/week. Performance doses start at 300mg/week.
FDA-approved oral undecanoate products bypass first-pass liver metabolism via lymphatic absorption, so unlike 17-alkylated orals (e.g. Dianabol) it is NOT hepatotoxic - but absorption is erratic and strongly food-dependent, and all three brands carry a boxed warning for blood-pressure increases requiring REMS certification. This is a continuous clinical TRT product, not a 'cycled' compound - cycle-length fields are not applicable. High pill burden/cost and absorption variability mean this route sees essentially no PED/performance use; it's almost exclusively prescribed and lab-monitored for hypogonadism.
Only about 10% of applied testosterone is absorbed through skin, so gels top out at a low, physiologic-replacement ceiling and are essentially never used for performance dosing. The main real-world hazard is transference - secondary exposure of partners or children via skin contact with an unwashed/uncovered application site. Continuous daily-use clinical route; not cycled.
Lowest dose-ceiling of the mainstream TRT routes and frequently causes application-site skin irritation, which is the most common reason patients switch away from it. Essentially confined to clinical hypogonadism treatment with no relevance to performance dosing; continuous use, not cycled.
Nasal absorption is rapid but short-lived, so thrice-daily dosing 6-8 hours apart is required just to approximate steady levels - a burden that limits real-world adherence. Avoids the skin-transference risk of gels; local nasal irritation and epistaxis are the main side effects. Niche clinical option with minimal PED-community use given the dosing frequency and modest achievable levels; continuous use, not cycled.
150-450mg per implantation session (typically ~2-6 pellets of 75mg each per FDA label; some protocols use more), repeated roughly every 3-6 months. Delivers slow, steady release without the peaks/troughs of injections, but the total dose is fixed once implanted - it cannot be adjusted, and stopping early if side effects occur requires a minor surgical removal (pellets can also spontaneously extrude). Requires an in-office procedure each cycle.
Side Effects
Gynecomastia
commonDevelopment of breast tissue due to estrogen conversion via aromatization.
Use Aromatase Inhibitors (Anastrozole 0.5mg 2x/week) to control estrogen levels.
Water Retention (Edema)
commonSubcutaneous water retention causing a "bloated" appearance.
Control estrogen with AI; manage sodium intake.
High Blood Pressure
commonElevated blood pressure from water retention and increased red blood cell count.
Regular cardio, monitor BP, control estrogen and sodium.
Natural Testosterone Suppression
very commonComplete shutdown of natural testosterone production during use.
Proper PCT protocol after cycle completion.
General Mitigation Strategies
Aromatase Inhibitors (Anastrozole 0.5mg 2x/week) for estrogen control. Proper PCT with Nolvadex or Clomid after cycle. Regular bloodwork to monitor hormone levels, lipids, and hematocrit.
Support Supplements
Ancillary supplements commonly run alongside Testosterone to manage side effects, support the target tissue, or fill nutrient demands it creates.
Omega-3 fish oil (EPA/DHA)
Lowers triglycerides and provides mild anti-inflammatory/antiplatelet support to offset some cardiovascular strain of a cycle.
- Dose
- 2-4 g/day combined EPA+DHA
- Timing
- With meals
- When
- Baseline on-cycle support; will not fully rescue AAS-suppressed HDL.
Citrus bergamot
The most evidence-backed lipid support here: flavonoids with statin-like HMG-CoA activity; a 4-month RCT showed LDL down ~11.5% and total cholesterol down ~8.8%, with a modest (borderline-significant) HDL increase.
- Dose
- 500-1,000mg/day standardized extract
- Timing
- Daily
- When
- Especially useful with orals or drier compounds that crush lipids.
Blood pressure control (telmisartan / nebivolol / low-dose tadalafil)
AAS raise BP via fluid retention, hematocrit and vascular effects. Telmisartan (ARB, also improves insulin sensitivity), nebivolol (NO-releasing beta-blocker) and 2.5-5mg tadalafil (endothelial/erectile support) are the common tools.
- Dose
- Telmisartan 20-80mg/day; nebivolol 2.5-10mg/day; tadalafil 2.5-5mg/day
- Timing
- Daily; titrate to blood-pressure readings
- When
- Add based on measured BP, not by default. Never combine tadalafil with nitrates.
Hematocrit management (donate blood / phlebotomy)
KeyTestosterone raises red blood cell count; high hematocrit thickens blood and raises clot risk. Donation/therapeutic phlebotomy is the actual fix.
- Dose
- Donate when hematocrit trends high (guided by bloodwork)
- Timing
- As needed per labs
- When
- Low-dose aspirin (81mg) is sometimes added for viscosity but does NOT lower hematocrit. Phlebotomy does. Avoid aspirin if hematocrit is normal.
Liver support (TUDCA + NAC)
Only relevant if an oral 17-alkylated steroid (e.g. Dianabol) is used to kickstart the cycle, supports bile flow and hepatic glutathione.
- Dose
- TUDCA 500-1,000mg/day; NAC 600-1,200mg/day
- Timing
- Through the oral portion of the cycle
- When
- Not needed for injectable testosterone alone. Does not make orals "safe". Dose/duration limits and bloodwork are the real protection.
Post Cycle Therapy (PCT)
Testosterone fully suppresses natural production, so PCT is required after a cycle (unless cruising/on TRT). Standard SERM protocol: Nolvadex (tamoxifen) 40/40/20/20mg/day or Clomid (clomiphene) 50/50/25/25mg/day over 4 weeks; enclomiphene is a cleaner alternative. Timing depends on the ester. Start ~2 weeks after the last long-ester (enanthate/cypionate) injection, or ~3-4 days after a short ester (propionate), once the drug has cleared enough that its feedback fades. hCG (500-1,500 IU 2-3x/week) is used on-cycle and/or in the ~10-14 days before PCT to restore testicular size, then stopped a few days before the SERMs begin so the pituitary can rebound. Confirm recovery with bloodwork (LH, FSH, total/free testosterone, E2) ~4-8 weeks after finishing PCT.
How It Works
Testosterone binds to androgen receptors in muscle tissue, stimulating protein synthesis and nitrogen retention. This creates an anabolic environment that promotes muscle growth and recovery. It also increases red blood cell production (erythropoiesis), enhancing oxygen delivery to muscles.
Hormonal & Androgenic Profile
100:100 (the reference standard all other steroids are rated against)
Aromatizes readily: an AI (e.g. anastrozole) or a SERM for gyno may be needed at higher doses, dosed to bloodwork. Many on TRT doses need no AI at all.
Converts to DHT via 5-alpha-reductase, which drives its androgenic hair/prostate effects. This is the one case where finasteride/dutasteride help. They cut scalp DHT and reduce hair loss (at the cost of some other DHT-mediated benefits).
Raises hematocrit (manage with blood donation), can raise BP via water retention; oral kickstarts and high doses worsen lipids.
Fundamentals
Reference on the practices relevant to Testosterone: how they are done and where they go wrong. Not a recommendation to use it.
Common Stacks
- Testosterone + Deca-Durabolin - Classic bulking stack
- Testosterone + Anavar - Lean gains with minimal water
- Testosterone + Dianabol - Kickstart bulking cycle
Detection Times
Community-cited windows (not a precise clinical figure. Varies heavily by ester, dose/duration, and individual T/E ratio baseline): roughly 2-3 weeks for propionate, up to ~3 months (12 weeks) for enanthate/cypionate after a cycle. Because testosterone is endogenous, anti-doping labs do not rely on simple presence/absence. They use the urinary T/E ratio (>4:1 triggers review) and carbon isotope ratio (CIR/IRMS) testing to distinguish exogenous from natural testosterone, which can flag use well beyond simple "detection window" estimates.
Legal Status
Schedule III controlled substance (USA): exogenous testosterone and its esters.
Legal status varies by country and changes over time. This is a general summary, not legal advice.
WADA Status
All anabolic androgenic steroids (AAS) are prohibited at all times. Testosterone is explicitly listed and any exogenous testosterone is detectable via T/E ratio testing.