Reading Testosterone Injection Dosage

econnolly

New Member
Hi Everyone,

I recently started testosterone replacement therapy and had a quick question on the dosage. I was prescribed T Cyp 200 mg/ml 0.35ml two times a week along with 500 IU of HCG twice per week.

Could someone explain to me the 200 mg- is this the strength of the testosterone. Also, I thought the doctor mentioned that .35ml was equal to 70 mg. Would like make my total dosage per week at 140 mg since I am injecting twice per week. Any help explaining the dosage calculations would be greatly appreciated.
 
I would use a 27g 1/2 inch syringe. That was my original syringe I used for everything, it is also virtually painless and very easy to inject with.

I would recommend the Easy Touch brand.
 
Hi Everyone,

I recently started testosterone replacement therapy and had a quick question on the dosage. I was prescribed T Cyp 200 mg/ml 0.35ml two times a week along with 500 IU of HCG twice per week.

Could someone explain to me the 200 mg- is this the strength of the testosterone. Also, I thought the doctor mentioned that .35ml was equal to 70 mg. Would like make my total dosage per week at 140 mg since I am injecting twice per week. Any help explaining the dosage calculations would be greatly appreciated.


You are correct, it was a little confusing the first time I read the vial. Basically it means the amount of testosterone in one ml of oil.

200 mg/ml means 1 ml is 200 mg.

200mg x .35 = 70 mg.

Then the insulin syringes people like to recommend aren't labeled in ml, they are labeled in units. One typical size insulin syringe has a capacity of 100 units, which is 1 ml. Since you want to inject -.35 ml, you need to fill the syringe to 35 units. For HCG at 500 IU you need to inject 0.5 ml, or 50 units on an insulin syringe.

I used to use a 1.5 inch 23 gauge 5 ml syringe, it would be difficult to inject only 0.35 ml since it barely fills the syringe, but I was injecting 4 ml of Nebido.
 
You are correct, it was a little confusing the first time I read the vial. Basically it means the amount of testosterone in one ml of oil.

200 mg/ml means 1 ml is 200 mg.

200mg x .35 = 70 mg.

Then the insulin syringes people like to recommend aren't labeled in ml, they are labeled in units. One typical size insulin syringe has a capacity of 100 units, which is 1 ml. Since you want to inject -.35 ml, you need to fill the syringe to 35 units. For HCG at 500 IU you need to inject 0.5 ml, or 50 units on an insulin syringe.

I used to use a 1.5 inch 23 gauge 5 ml syringe, it would be difficult to inject only 0.35 ml since it barely fills the syringe, but I was injecting 4 ml of Nebido.

Well if this is true then I was actually injecting a totally different dose than I thought I was in my first protocol. I was prescribed .75ml's per week which I was assuming was 175mg of testosterone cypionate (strength was 200ml/1L) using a 5 liter syringe. If your math is right then I was injecting 150mg weekly rather than the 175 mg. Are you sure this is right?

I'm now injecting .25ml 2x per week which should be 50mg 2x per week using a 1L syringe. That math does come out right. Wow, I better be careful if I go down in dosage. My math was wrong.
 
Well if this is true then I was actually injecting a totally different dose than I thought I was in my first protocol. I was prescribed .75ml's per week which I was assuming was 175mg of testosterone cypionate (strength was 200ml/1L) using a 5 liter syringe. If your math is right then I was injecting 150mg weekly rather than the 175 mg. Are you sure this is right?

I'm now injecting .25ml 2x per week which should be 50mg 2x per week using a 1L syringe. That math does come out right. Wow, I better be careful if I go down in dosage. My math was wrong.

I was sure my math was right when I posted it, but would feel better if others confirmed it. But since no one jumped in to correct it ....

BTW, you mixed up your nomenclature in the second paragraph. Maybe a whale needs a 1 LITER syringe, you likely meant 1 ml.
 

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TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

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Enter your total testosterone value to see predictions

Results will appear here after calculation

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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