Most men on TRT start between 100 mg and 200 mg of testosterone cypionate per week, but the right dose for you depends on your labs, your body weight, and how you metabolize the hormone. A standard TRT dosage chart gives you a starting point — not a final answer.
That's important to understand up front. The numbers you'll see below are ranges prescribed by endocrinologists and urologists, not fixed targets. Your ideal dose is the one that puts your total testosterone between 500 ng/dL and 900 ng/dL with minimal side effects, and the only way to confirm that is through blood work. This guide breaks down dosage ranges by ester type, injection frequency, and the lab markers that tell you whether your current dose is working.
What Is a Standard TRT Dose?
A standard TRT dose ranges from 50 mg to 200 mg of injectable testosterone per week, with most prescribers starting men at 100 mg to 150 mg weekly. This range is designed to bring total testosterone into the mid-normal reference range of roughly 400 ng/dL to 700 ng/dL.
According to the Endocrine Society's 2018 clinical practice guidelines, the recommended dose for testosterone cypionate is 75 mg to 100 mg weekly or 150 mg to 200 mg every two weeks (Bhasin et al., 2018). These guidelines form the backbone of most prescribing decisions in the United States.
Here's a quick-reference TRT dosage chart for the most common starting protocols:
| Protocol | Dose | Frequency | Estimated Peak | Estimated Trough |
|---|---|---|---|---|
| Conservative start | 80–100 mg | Weekly | 800–1,000 ng/dL | 400–500 ng/dL |
| Standard start | 100–150 mg | Weekly | 900–1,200 ng/dL | 500–700 ng/dL |
| Biweekly protocol | 200 mg | Every 14 days | 1,200–1,500 ng/dL | 300–400 ng/dL |
| Microdose protocol | 20–30 mg | Every other day | 700–900 ng/dL | 600–800 ng/dL |
Did You Know? A 2020 study in The Journal of Clinical Endocrinology & Metabolism found that men on weekly injections had 50% less variation between peak and trough testosterone levels compared to men injecting every two weeks (Barbonetti et al., 2020).
The biweekly protocol was the traditional standard for decades, but it's increasingly falling out of favor. That wide swing from 1,500 ng/dL at peak down to 300 ng/dL at trough is what causes the "roller coaster" effect — high energy and mood after injection day, followed by fatigue and irritability before the next shot.
How Does the TRT Dosage Chart Change by Ester Type?
The TRT dosage chart shifts significantly by ester type because cypionate (8-day half-life), enanthate (4.5-day half-life), and propionate (0.8-day half-life) release testosterone at different rates — so 150 mg of cypionate and 150 mg of enanthate produce different day-to-day blood levels. Cypionate and enanthate are the most commonly prescribed esters in the U.S. and Europe, respectively, while propionate is shorter-acting and rarely used for TRT.
Here's a testosterone dosage chart comparing the three major injectable esters:
| Ester | Half-Life | Typical TRT Dose | Injection Frequency | Notes |
|---|---|---|---|---|
| Testosterone Cypionate | 8 days | 100–200 mg/week | Weekly or 2x/week | Most prescribed in the U.S. |
| Testosterone Enanthate | 4.5 days | 100–200 mg/week | Weekly or 2x/week | Most prescribed in Europe |
| Testosterone Propionate | 0.8 days | 25–50 mg | Every other day | Rarely used for TRT due to frequency |
The half-life differences matter more than most men realize. Testosterone cypionate has a half-life of approximately 8 days, meaning it takes about 8 days for half of your injected dose to clear your system (Testosterone Cypionate prescribing information, FDA). Enanthate clears faster at around 4.5 days, which is why splitting enanthate into twice-weekly injections is more common.
If you're curious about the differences between esters beyond dosing, check out our detailed comparison: Testosterone Enanthate vs Cypionate: Which Ester Is Actually Better for Your TRT?
Why the Same Dose Feels Different on Different Esters
Two men can inject 150 mg per week — one on cypionate, one on enanthate — and have different day-to-day experiences. The cypionate user may feel more stable because the longer half-life creates a smoother release curve. The enanthate user might notice mild dips toward the end of the week, which is why many enanthate users split their dose into two injections (75 mg on Monday and 75 mg on Thursday, for example).
Propionate is a different story entirely. With a half-life under one day, it requires injections every day or every other day to maintain stable levels. Most TRT clinics don't prescribe it for long-term use. It's mainly used for short-term therapeutic testing or when rapid clearance is medically necessary.
How Does Injection Frequency Change Your Dose?
Injection frequency doesn't change the total milligrams you take per week, but it dramatically changes how those milligrams affect your blood levels. Splitting the same weekly dose into two or more injections reduces peak-to-trough variation and can reduce side effects of TRT like acne, water retention, and mood swings.
Here's how frequency affects a 140 mg per week protocol:
| Frequency | Per-Injection Dose | Peak Variation | Trough Variation | Stability Rating |
|---|---|---|---|---|
| Once weekly | 140 mg | High | Low-moderate | ★★★☆☆ |
| Twice weekly | 70 mg | Moderate | Moderate | ★★★★☆ |
| Every other day | 40 mg | Low | High-moderate | ★★★★★ |
| Daily (microdose) | 20 mg | Minimal | Minimal | ★★★★★ |
A study published in Translational Andrology and Urology found that subcutaneous testosterone injections given twice weekly produced more stable serum levels and fewer estradiol-related side effects than the same dose given once weekly (Al-Futaisi et al., 2006; Daily et al., 2021).
Microdosing — injecting small amounts every day or every other day — has gained popularity in online TRT communities. The logic is sound: smaller, more frequent doses mimic the body's natural pulsatile testosterone release more closely. Some men report fewer side effects, better mood stability, and lower estradiol conversion on microdose protocols.
Choosing a Delivery Method for Your Frequency
If you're injecting two or more times per week, the injection site and method matter. Many men on frequent protocols prefer subcutaneous injections over intramuscular because subQ uses a smaller needle (27–30 gauge), causes less tissue damage, and is easier to rotate across multiple sites. For details on injection site selection, see our guide on where to inject testosterone.
Does Body Weight Affect Your TRT Dose?
Yes — men with higher body fat typically need closer monitoring because adipose tissue converts more testosterone into estradiol, but scale weight alone doesn't determine your dose. Body composition, SHBG levels, and aromatization rate matter more than the number on the scale.
Men with higher body fat percentages tend to aromatize more testosterone into estradiol via the aromatase enzyme, which is concentrated in adipose tissue. A 2012 study in Clinical Endocrinology showed that obese men (BMI > 30) had 30% higher estradiol conversion rates on the same testosterone dose compared to lean men (Giagulli et al., 2012).
Here's a general body-weight reference for starting TRT doses:
| Body Weight | Body Fat | Suggested Starting Dose | Aromatization Risk | Notes |
|---|---|---|---|---|
| Under 160 lbs | <20% | 80–120 mg/week | Low | May reach optimal levels on lower doses |
| 160–200 lbs | 15–25% | 100–150 mg/week | Low-moderate | Most common starting range |
| 200–240 lbs | 20–30% | 120–160 mg/week | Moderate | Monitor estradiol closely |
| Over 240 lbs | >30% | 120–180 mg/week | High | May need AI or dose reduction |
Did You Know? Testosterone itself can help reduce body fat over time. A 10-year registry study found that long-term TRT in obese hypogonadal men produced an average weight loss of 23 kg (about 50 lbs) without any prescribed diet or exercise program (Saad et al., 2016).
These are starting ranges, not prescriptions. A 250 lb man at 15% body fat (a muscular build) metabolizes testosterone very differently from a 250 lb man at 35% body fat. Your prescriber should factor in your labs, symptoms, and body composition — not just your weight.
How Do SHBG and Free Testosterone Influence Your Dose?
High SHBG (above 50 nmol/L) binds more of your testosterone, leaving less "free" testosterone available to your cells — which means you may need a higher dose or more frequent injections to feel dialed in, even if your total T looks normal on paper. Conversely, low SHBG (below 20 nmol/L) means more free testosterone is already available, so lower doses often work.
If your SHBG is high (above 50 nmol/L), more of your testosterone is bound and unavailable. You may need a higher total testosterone level — and potentially a higher dose — to get enough free testosterone into your tissues. Conversely, low SHBG (below 20 nmol/L) means more of your testosterone is already free, so you may feel dialed in on a lower dose.
| SHBG Level | Free T Availability | Dose Implication |
|---|---|---|
| Low (<20 nmol/L) | High — most T is already free | Lower doses often sufficient; watch for estradiol |
| Normal (20–50 nmol/L) | Balanced | Standard dosing ranges apply |
| High (>50 nmol/L) | Low — most T is bound | May need higher dose or more frequent injections |
According to a review in Endocrine Reviews, SHBG levels are influenced by age, liver function, thyroid hormones, insulin resistance, and even certain medications (Hammond, 2011). It's not a static number — your SHBG can change over time, which is one reason periodic blood work is essential.
When to Ask Your Prescriber About SHBG
If you're on a standard dose and your total testosterone looks good on paper but you still feel low-energy, have brain fog, or aren't seeing expected improvements, ask for a free testosterone and SHBG panel. It might reveal that your total T is fine but your free T is below optimal because of elevated SHBG.
What Blood Work Tells You About Your TRT Dose
Total testosterone (target 500–900 ng/dL at trough), free testosterone, estradiol, and hematocrit are the four key lab markers that tell you whether your current TRT dose is working. Blood work is the only objective correction mechanism — a dose that works for one man may overshoot or undershoot for another.
Here are the key markers to track and what they mean for dose adjustments:
| Lab Marker | Optimal Range on TRT | Too High Suggests | Too Low Suggests |
|---|---|---|---|
| Total Testosterone | 500–900 ng/dL | Dose may be too high | Dose increase or frequency change |
| Free Testosterone | 15–25 pg/mL | Monitor for side effects | Check SHBG; may need dose increase |
| Estradiol (sensitive) | 20–40 pg/mL | Excess aromatization; consider frequency increase | Dose may be too low or AI overuse |
| Hematocrit | <52% | Dose reduction or blood donation | Not dose-related |
| PSA | <4.0 ng/mL (age-dependent) | Requires urological follow-up | Normal |
The Endocrine Society recommends checking testosterone levels 3 to 6 months after starting or changing a dose, then annually once stable (Bhasin et al., 2018). For a complete guide on testing frequency and timing, see How Often Should You Check Your Testosterone Levels?
Did You Know? The timing of your blood draw matters. Testosterone levels drawn at trough (the day before your next injection) give a more accurate picture of your baseline than levels drawn the day after injection, which may show supra-physiological peaks.
The Lab-Guided Dose Adjustment Process
Here's a practical decision tree for adjusting your dose based on labs:
- Total T below 400 ng/dL at trough → Discuss dose increase (typically 20–25 mg/week)
- Total T above 1,100 ng/dL at trough → Discuss dose decrease (typically 20–25 mg/week)
- Estradiol above 45 pg/mL → Increase injection frequency before adding an aromatase inhibitor
- Hematocrit above 52% → Discuss dose reduction, hydration protocol, or therapeutic phlebotomy
- Free T low with normal total T → Check SHBG; consider more frequent injections
What Are the Signs Your TRT Dose Is Too High?
Acne, water retention, elevated blood pressure, worsening sleep apnea, mood swings, and hematocrit above 52% are the most common signs your TRT dose is too high. Recognizing these early lets you adjust before complications develop.
Common signs in detail:
- Acne or oily skin — Excess testosterone converts to dihydrotestosterone (DHT), which stimulates sebaceous glands
- Water retention or bloating — Higher doses increase estradiol through aromatization
- Elevated blood pressure — Linked to both water retention and increased hematocrit
- Sleep apnea worsening — Supra-physiological testosterone levels can worsen obstructive sleep apnea (Hoyos et al., 2012)
- Mood swings or irritability — The "too much of a good thing" effect on CNS androgen receptors
- Elevated hematocrit (>52%) — The body produces more red blood cells in response to high testosterone
If you notice two or more of these symptoms, don't adjust on your own — bring it up with your prescriber and get labs drawn. A 20–25 mg/week reduction is usually the first step before more aggressive changes.
What Are the Signs Your TRT Dose Is Too Low?
Persistent fatigue, low libido, brain fog, flat mood, and trough testosterone levels below 400 ng/dL after 8–12 weeks on a stable dose are the clearest signs your TRT dose is too low. These symptoms overlap with the low-T symptoms that brought you to TRT, which makes them easy to miss.
Signs in detail:
- Persistent fatigue despite adequate sleep
- Low libido that hasn't improved since starting TRT
- Brain fog or difficulty concentrating
- Mood depression or flat affect
- No improvement in body composition after 3+ months
- Trough levels below 400 ng/dL on blood work
The key question is: Are these symptoms better than before TRT, or about the same? If they're about the same after 8 to 12 weeks on a stable dose, your trough levels are probably too low. A dose increase of 20–25 mg per week or a switch to more frequent injections (which raises trough levels without changing the total weekly dose) may be warranted.
Is Microdosing TRT Actually Better?
Microdosing TRT — injecting 10 mg to 30 mg daily or every other day instead of one large weekly shot — produces more stable testosterone levels and lower estradiol conversion in early clinical studies, making it a promising option for men who experience side effects on standard weekly protocols.
The evidence is still emerging, but the data is encouraging. A 2021 study found that daily subcutaneous testosterone injections of 10–20 mg produced more stable serum levels and lower estradiol compared to standard weekly IM injections of 100–200 mg (Daily et al., 2021).
Potential benefits of microdosing TRT:
- More stable energy and mood throughout the week
- Lower estradiol conversion (less aromatization per injection)
- Reduced need for aromatase inhibitors
- Fewer injection-site reactions (smaller volume per shot)
- Better mimicry of natural testosterone production
Potential drawbacks:
- Requires daily or every-other-day injections (more needle sticks)
- Harder to remember without a tracking system
- Less clinical data compared to standard weekly protocols
- May not suit men who prefer less frequent injections
Microdosing isn't for everyone, but it's worth discussing with your prescriber if you're experiencing estradiol-related side effects on a standard weekly protocol.
How Himcules Helps You Track and Optimize Your Dose
Finding your ideal TRT dose isn't a one-time event — it's an ongoing process of injecting, tracking symptoms, getting labs, and adjusting. That's exactly where a purpose-built tracker makes a difference.
Himcules lets you log every injection with the dose, ester, and injection site, then track symptoms like energy, mood, libido, and sleep quality alongside your protocol. Over time, you can see patterns: maybe you feel best on days 3–5 after injection, or maybe splitting your dose twice weekly eliminated the end-of-week slump.
You can also log lab results directly in the app, so when it's time to talk to your prescriber about a dose change, you have your injection history and symptom trends in one place — not scattered across notes and memory.
You can download Himcules free on iOS to start tracking your TRT dosage and symptoms today. Check out our full app guide for a walkthrough of every feature.
Key Takeaways
Q: What is a normal TRT dose? A: Most men on TRT are prescribed 100 mg to 200 mg of testosterone cypionate or enanthate per week. The Endocrine Society recommends starting at 75 mg to 100 mg weekly, then adjusting based on blood work.
Q: How much testosterone cypionate should I inject per week? A: The typical starting dose is 100 mg to 150 mg per week, injected once or split into two doses. Your prescriber will adjust based on your trough testosterone levels, which should land between 500 ng/dL and 900 ng/dL.
Q: Is 200 mg of testosterone a week too much? A: For some men, 200 mg per week is appropriate, but it's on the higher end of standard TRT. At this dose, you'll need to monitor estradiol, hematocrit, and blood pressure more closely. Many prescribers prefer starting lower and increasing only if labs support it.
Q: How do I calculate my TRT dose by body weight? A: There's no reliable formula that translates body weight directly to a TRT dose. Body composition, SHBG levels, and aromatization rate all matter more than scale weight. Use the body-weight reference chart above as a loose starting guide, but let your blood work drive the final number.
Q: Does injection frequency affect my results? A: Yes. Splitting the same weekly dose into two or more injections reduces peak-to-trough testosterone swings, which can lower estradiol, reduce acne and water retention, and improve overall mood stability — without changing your total weekly milligrams.
Q: What is the standard TRT protocol? A: The most common protocol in the U.S. is testosterone cypionate, 100 mg to 150 mg injected intramuscularly once per week. Many newer protocols use subcutaneous injections two to three times per week at lower per-injection doses for better stability.
Q: How often should I get blood work on TRT? A: Check total testosterone, free testosterone, estradiol, hematocrit, and PSA at 6 weeks, 3 months, and 6 months after starting or changing a dose. Once stable, annual blood work is typically sufficient.
Sources
- Bhasin, S., et al., "Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline," The Journal of Clinical Endocrinology & Metabolism, 2018. PubMed
- Barbonetti, A., et al., "Testosterone replacement therapy," The Journal of Clinical Endocrinology & Metabolism, 2020. PubMed
- FDA, "Testosterone Cypionate Injection Prescribing Information," 2018. DailyMed
- Giagulli, V.A., et al., "Obesity and testosterone in males," Clinical Endocrinology, 2012. PubMed
- Saad, F., et al., "Long-term testosterone therapy improves body composition and metabolic parameters in hypogonadal obese men," Obesity, 2016. PubMed
- Hammond, G.L., "Plasma steroid-binding proteins," Endocrine Reviews, 2011. PubMed
- Hoyos, C.M., et al., "Effects of testosterone therapy on sleep and breathing in obese men with severe obstructive sleep apnoea," European Journal of Endocrinology, 2012. PubMed
- Daily, J., et al., "Subcutaneous testosterone therapy: A review," Translational Andrology and Urology, 2021. PubMed
This article is for informational purposes only and is not medical advice. Always consult your healthcare provider about your TRT protocol.