SubQ question

TrtLA90254

New Member
Hey guys I’m a couple weeks into TRT current protocol is:
T Cyp 200 mg/ml – 0.35 ml IM/SQ twice weekly.
HCG 500 iu SQ twice weekly.
I would like to inject subQ and have read lots of differing opinions on needle size. I was prescribed 1ml Luer Lock syringes with 25g 5/8” needles and my prescription saying either IM or SubQ. What is generally the most common size needle for sub Q in the abdomen?
 
I use 5/16" 30g. And have even gone smaller with no trouble. I was recently away, had to stay a couple weeks longer than anticipated and ran out of my usual. I had to buy what I could find at local pharmacy. Only size any of them had were 3/10" 31g. Worked fine for T in grapeseed oil and HCG.
 

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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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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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