RAD-140 Results After 8 Weeks: What the Bloodwork Actually Shows

Why Bloodwork Matters More Than Progress Photos

A progress photo tells you one thing: how you look at a single moment under specific conditions. Bloodwork tells you:

• Whether your hypothalamic-pituitary-gonadal (HPG) axis is being suppressed
• How your liver is handling the compound
• Whether your cardiovascular risk markers are shifting
• Your actual hormonal status — not how you feel, but what is

RAD-140 is frequently marketed as "non-suppressive" or "mildly suppressive." This is categorically false for the majority of users at bodybuilding-relevant doses (10-30mg/day). The clinical data from the phase I trial (Miller et al., 2011) showed dose-dependent suppression of gonadotropins even at research doses below what most users take.

If you run RAD-140 without bloodwork, you are flying blind into hormonal suppression. You will not know when to start PCT, how aggressive your PCT needs to be, or whether your liver needs attention.

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Pre-Cycle Baseline: What to Test Before Day 1

Before your first RAD-140 dose, get a comprehensive panel that includes:

Hormonal Panel:

• Total testosterone
• Free testosterone
• LH (luteinizing hormone)
• FSH (follicle-stimulating hormone)
• Estradiol (E2)
• SHBG (sex hormone-binding globulin)

Liver Panel:

• ALT (alanine aminotransferase)
• AST (aspartate aminotransferase)
• GGT (gamma-glutamyl transferase)
• Total bilirubin

Lipid Panel:

• Total cholesterol
• LDL cholesterol
• HDL cholesterol
• Triglycerides

Additional:

• Complete blood count (CBC)
• Fasting glucose
• Creatinine/eGFR

In Canada, you can request these through services like LifeLabs or Dynacare. Some provinces allow direct-to-consumer ordering; others require a physician requisition. Budget $200-400 CAD for the full panel depending on province.

[Internal Link: /bloodwork-guide/]

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Week-by-Week: What RAD-140 Does to Your Hormones

Weeks 1-2: The Honeymoon Phase

During the first two weeks at 10-20mg/day, most users notice:

• Increased aggression and drive in the gym
• Slight vascularity increase
• Minimal hormonal disruption on bloodwork

At this stage, LH and FSH are beginning to decline but typically remain within the low-normal range. Total testosterone may show a 10-20% dip. The androgen receptor activation from RAD-140 is sending feedback signals to the hypothalamus, beginning the suppressive cascade.

Weeks 3-4: Suppression Begins in Earnest

By week 3-4, bloodwork reveals the true picture:

• LH: Drops to 1.0-2.5 IU/L (from a baseline of 3-8 IU/L)
• FSH: Drops to 0.5-2.0 IU/L (from a baseline of 2-8 IU/L)
• Total testosterone: 40-60% reduction from baseline
• Free testosterone: Often drops proportionally, though SHBG changes can modulate this

The mechanism is straightforward: RAD-140 activates androgen receptors in the hypothalamus and pituitary, mimicking testosterone's negative feedback signal. The brain perceives sufficient androgenic activity and downregulates gonadotropin production (Narayanan et al., 2018, Nuclear Receptor Signaling).

Physical effects at this stage:

• Strength increases become noticeable (5-15% on major lifts)
• Muscle fullness increases
• Some users report mild lethargy as testosterone drops
• Libido may begin declining

Weeks 5-6: Peak Suppression and Peak Results

This is where RAD-140 shows its dual nature — maximum anabolic effect coinciding with maximum hormonal disruption:

• LH: Often drops below 1.0 IU/L
• FSH: May be undetectable (<0.5 IU/L)
• Total testosterone: 50-80% suppressed (many users report levels of 100-250 ng/dL from baselines of 500-700 ng/dL)
• SHBG: Often decreased 20-40%, partially compensating for total T decline
• Estradiol: Drops proportionally with testosterone (important — no estrogen excess with RAD-140)

Physical effects:

• Peak strength gains (many users hit PRs in this window)
• Visible body composition changes
• Muscle hardness and vascularity increase
• Potential side effects: insomnia, aggression, reduced libido, mild hair shedding in predisposed individuals

Weeks 7-8: Diminishing Returns, Deepening Suppression

By weeks 7-8, the anabolic response often plateaus while suppression deepens:

• Hormonal levels remain at their most suppressed
• New gains slow considerably
• Side effects may accumulate (fatigue, joint discomfort, mood changes)
• This is why 8 weeks is the recommended maximum for most users

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Liver Enzymes on RAD-140: The Real Data

RAD-140's hepatotoxicity is a topic of significant debate. The clinical evidence:

What the research shows:

• The phase I clinical trial reported dose-dependent liver enzyme elevations in some subjects (Miller et al., 2011)
• Case reports have documented clinically significant hepatotoxicity with RAD-140, including cholestatic jaundice (Flores et al., 2020, ACG Case Reports Journal)
• Most anecdotal reports show mild elevations (ALT/AST 1.5-3x upper limit of normal)

Typical bloodwork findings at 10-20mg/day for 8 weeks:

• ALT: Elevated to 50-120 U/L (reference range: 7-56 U/L)
• AST: Elevated to 40-90 U/L (reference range: 10-40 U/L)
• GGT: Usually remains normal or mildly elevated
• Bilirubin: Usually normal

Important context: These elevations are generally transient and resolve within 4-6 weeks post-cycle. However, they indicate real hepatocellular stress. Users with pre-existing liver conditions, those consuming alcohol regularly, or those stacking RAD-140 with other hepatotoxic compounds (oral steroids, certain medications) face compounded risk.

Protective measures:

• NAC (N-acetylcysteine): 600-1200mg/day throughout cycle
• TUDCA: 250-500mg/day if ALT exceeds 2x upper limit
• Eliminate alcohol during cycle
• Avoid acetaminophen (Tylenol) during cycle

[Internal Link: /liver-support-supplements/]

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Lipid Panel Changes: The Cardiovascular Cost

RAD-140's effect on lipids is arguably its most concerning side effect from a long-term health perspective:

HDL cholesterol (the "good" cholesterol):

• Typical reduction: 20-50% from baseline
• Many users see HDL drop from 50-60 mg/dL to 25-35 mg/dL
• This reduction begins within 2 weeks and worsens throughout the cycle
• Recovery takes 4-8 weeks post-cycle

LDL cholesterol:

• Variable response — some users see increases of 10-30%, others minimal change
• The HDL:LDL ratio shift is the primary concern

Triglycerides:

• Usually minimally affected at standard doses

Why this matters: The HDL reduction from RAD-140 is comparable to what's seen with oral anabolic steroids (Dalton et al., 2011). HDL is anti-atherogenic — it removes cholesterol from arterial walls. A 40% reduction in HDL for 8 weeks represents a meaningful increase in cardiovascular risk, particularly with repeated cycles.

Protective strategies:

• Cardiovascular exercise: 150+ minutes/week throughout cycle
• Omega-3 fatty acids: 2-4g EPA/DHA daily
• Citrus bergamot: 500-1000mg/day (limited evidence for HDL support)
• Keep cycles to 8 weeks maximum with adequate time off between

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Physical Results: What 8 Weeks of RAD-140 Actually Delivers

With the health data established, here's what you can realistically expect in terms of physical results:

Lean mass gains:

• Typical range: 5-10 lbs over 8 weeks (at 10-20mg/day)
• Experienced lifters with training and nutrition dialed in: upper end
• Novice lifters: lower end (they respond to anything)
• These numbers assume caloric surplus of 300-500 above maintenance

Strength gains:

• Bench press: +15-30 lbs
• Squat: +20-40 lbs
• Deadlift: +25-50 lbs
• Overhead press: +10-20 lbs
• Most users report strength increases beginning week 2-3

Body composition:

• Visible recomp effect even at maintenance calories
• Increased muscle fullness and vascularity
• Some users report simultaneous fat loss (particularly at maintenance or slight deficit)
• Muscle hardness increases, especially in weeks 4-8

What you keep post-cycle:

• With proper PCT: 60-80% of gains are retainable
• Without PCT: 40-60% retention typical (testosterone recovery takes longer)
• Strength retention is usually better than mass retention
• The leaner you are, the more you keep

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The Suppression Reality: RAD-140 IS Suppressive

Let's be direct: anyone telling you that RAD-140 is "non-suppressive" or that "SARMs don't need PCT" is either uninformed or selling you something.

The data is unambiguous:

1. Mechanism: RAD-140 binds the androgen receptor with high affinity, including in hypothalamic and pituitary tissue. This triggers negative feedback identical in mechanism to exogenous testosterone.

2. Degree: At bodybuilding doses (10-30mg/day), suppression of 50-80% of endogenous testosterone is common and well-documented.

3. Recovery without PCT: Natural recovery occurs but takes 4-8 weeks. During this window, you are hypogonadal — low energy, low libido, potential muscle loss, mood disturbance.

4. Individual variation: Some users are more susceptible to suppression than others. Genetics, age, dose, and cycle length all factor in. But NO ONE is immune at effective doses.

The "SARMs don't suppress" myth originated from marketing materials and forum posts by people who never got bloodwork. When you actually measure LH, FSH, and testosterone at week 6-8 of a RAD-140 cycle, the suppression is obvious and clinically significant.

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Mid-Cycle Bloodwork Protocol

Get bloodwork at week 4-5 of your cycle. This serves two purposes:

1. Safety check: If liver enzymes are significantly elevated (>3x upper limit) or lipids are severely disrupted, you have information to make a risk-informed decision about continuing.

2. PCT planning: Knowing your degree of suppression helps determine PCT aggressiveness.

What to test mid-cycle:

• Total testosterone
• LH and FSH
• ALT, AST
• HDL, LDL
• CBC (check hematocrit — RAD-140 can increase red blood cell production)

If total testosterone is below 150 ng/dL and you're experiencing significant side effects, consider ending the cycle early. Eight weeks is a guideline, not a requirement.

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Post-Cycle Bloodwork and Recovery Timeline

Immediately Post-Cycle (Week 8, Day 1 off):

• Testosterone: Still heavily suppressed (100-250 ng/dL range)
• LH/FSH: Still suppressed
• Liver enzymes: At their peak elevation
• HDL: At its lowest point

With PCT (Weeks 9-12):

Recommended PCT protocol for RAD-140:

• Nolvadex (tamoxifen): 20mg/day for 4 weeks
• OR Enclomiphene: 12.5-25mg/day for 4 weeks

Recovery timeline with PCT:

• Week 1-2 of PCT: LH and FSH begin rising
• Week 2-3: Testosterone starts recovering (often reaches 50-70% of baseline)
• Week 4: Most users are within 70-90% of baseline
• Week 6-8 post-cycle: Full recovery in most cases

Without PCT (natural recovery):

• Week 1-2 post-cycle: Minimal recovery — still deeply suppressed
• Week 3-4: LH/FSH begin rising slowly
• Week 4-6: Testosterone recovers to 40-60% of baseline
• Week 8-12: Full recovery (longer than with PCT)

Post-cycle bloodwork timing:

• Get labs 4 weeks after completing PCT (or 6 weeks post-cycle if no PCT)
• Confirm testosterone, LH, FSH, and liver enzymes have returned to baseline
• If not recovered by 8 weeks post-PCT, consult an endocrinologist

[Internal Link: /nolvadex/] [Internal Link: /enclomiphene/]

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PCT Protocol Specific to RAD-140

RAD-140 produces moderate-to-heavy suppression. The PCT protocol should match:

Standard RAD-140 PCT (10-20mg/day for 8 weeks):

Heavy suppression PCT (20-30mg/day or 10+ week cycle):

When to start PCT:

• RAD-140 has a half-life of approximately 60 hours
• Begin PCT 3 days after your last dose (allows compound to clear sufficiently)
• No need to wait 2 weeks like with long-ester testosterone

Supporting supplements during PCT:

• Zinc: 30-50mg/day (supports testosterone synthesis)
• Vitamin D3: 4000-5000 IU/day
• Ashwagandha (KSM-66): 600mg/day (Lopresti et al., 2019 — shown to support testosterone recovery)
• D-aspartic acid: 3g/day (modest LH stimulation evidence)

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Comparing RAD-140 Results to Other Compounds

RAD-140 vs. LGD-4033:

• RAD-140 produces more "dry" gains (less water retention)
• LGD-4033 gives more total weight gain but includes more water
• Both suppress similarly
• RAD-140 has slightly more hepatotoxicity concerns
• RAD-140 better for recomp; LGD-4033 better for pure bulk

RAD-140 vs. Testosterone (300mg/week):

• Testosterone produces more overall mass
• RAD-140 produces drier, more aesthetic gains
• Testosterone is injectable; RAD-140 is oral
• Testosterone has decades of safety data; RAD-140 has minimal
• Testosterone requires managing estrogen; RAD-140 does not aromatize

RAD-140 vs. Ostarine (MK-2866):

• RAD-140 is significantly more potent (2-3x the muscle-building effect)
• Ostarine is milder and less suppressive
• RAD-140 for bulking/recomp; Ostarine for cutting/preservation
• RAD-140 has more side effects across the board

[Internal Link: /lgd-4033/] [Internal Link: /ostarine/]

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Common Bloodwork Red Flags to Watch For

Stop your cycle immediately if:

• ALT or AST exceeds 5x the upper limit of normal (>200 U/L)
• You develop jaundice (yellowing of skin/eyes)
• Hematocrit exceeds 54% (polycythemia risk)
• You experience chest pain, severe headaches, or visual disturbances

Consider ending early if:

• Liver enzymes are 3-5x elevated and trending upward
• HDL drops below 20 mg/dL
• Severe mood disturbances or depression onset
• Sexual dysfunction becomes debilitating

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Frequently Asked Questions

Does RAD-140 show up on standard blood tests?

No. Standard testosterone panels will show low total testosterone but will not identify RAD-140 as the cause. Only specialized SARM testing (mass spectrometry) can detect RAD-140. However, a physician seeing suppressed LH/FSH with low testosterone in an otherwise healthy young male will suspect exogenous androgen use.

Can I take RAD-140 without getting bloodwork?

You can, but you shouldn't. Running RAD-140 without bloodwork is like driving at night without headlights — you might be fine, or you might crash. At minimum, get a baseline panel before starting and a recovery panel 4-6 weeks after PCT to confirm you've recovered.

How long after RAD-140 will my bloodwork return to normal?

For most users running 8-week cycles at 10-20mg/day with proper PCT: 6-8 weeks post-cycle. Without PCT: 8-12 weeks. Liver enzymes typically normalize faster (4-6 weeks). Lipids may take 8-12 weeks to fully recover, particularly HDL.

Is RAD-140 harder on bloodwork than real testosterone?

In some ways, yes. RAD-140's hepatotoxicity is a concern that injectable testosterone doesn't share. However, testosterone increases estrogen (requiring AI management), increases hematocrit more dramatically, and has more androgenic side effects. The suppression profile is similar at comparable anabolic output levels.

Should I use an AI (aromatase inhibitor) with RAD-140?

No. RAD-140 does not aromatize to estrogen. Using an AI would crash your already-declining estrogen levels, causing joint pain, mood issues, and worsening lipid profiles. If you're experiencing estrogen-like side effects on RAD-140 alone, the product may be contaminated or mislabeled.

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Conclusion: Let the Data Guide Your Decisions

RAD-140 is a potent compound that delivers measurable results — 5-10 lbs of lean mass, significant strength increases, and visible body composition improvement over 8 weeks. These results are real and reproducible.

But the cost is also measurable: 50-80% testosterone suppression, meaningful HDL reductions, potential liver enzyme elevations, and a recovery period requiring PCT.

The difference between responsible RAD-140 use and reckless experimentation is bloodwork. Three lab panels — pre-cycle, mid-cycle, and post-PCT — cost $600-1200 CAD total. That's the price of knowing exactly what's happening inside your body rather than guessing based on how you feel.

Your body is not a forum anecdote. Treat it like the complex biological system it is. Get the data.

[Internal Link: /rad-140/] [Internal Link: /pct-supplements/]

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Disclaimer: This article is for educational and informational purposes only. RAD-140 is a research chemical not approved for human consumption by Health Canada or any regulatory body. Consult a healthcare professional before using any performance-enhancing compound.

References:

• Jayaraman, A., et al. (2014). Selective androgen receptor modulator RAD140 is neuroprotective in cultured neurons and kainate-lesioned male rats. Endocrinology, 155(4), 1398-1406.
• Miller, C.P., et al. (2011). Design, synthesis, and preclinical characterization of the selective androgen receptor modulator (SARM) RAD140. ACS Medicinal Chemistry Letters, 2(2), 124-129.
• Narayanan, R., et al. (2018). Selective androgen receptor modulators (SARMs) as function promoting therapies. Current Opinion in Clinical Nutrition & Metabolic Care, 21(3), 182-190.
• Flores, J.E., et al. (2020). Severe cholestatic hepatitis in a young male patient associated with RAD-140. ACG Case Reports Journal, 7(10), e00455.
• Dalton, J.T., et al. (2011). The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women. Journal of Cachexia, Sarcopenia and Muscle, 2(3), 153-161.
• Lopresti, A.L., et al. (2019). A randomized, double-blind, placebo-controlled, crossover study examining the hormonal and vitality effects of ashwagandha in aging, overweight males. American Journal of Men's Health, 13(2).