Timing of labs on T Cream

MNguy

Member
I just started on the cream this weekend. I’m thinking about going in next week to run some labs to see where my levels are at and adjust from there. I know with the short half life of the cream, timing is really important for labs. So my question is, how many hours after I apply the cream should I wait for labs?
 
That's not true. It takes time for testosterone to work it's effects. Just because levels are stabilized doesn't mean you have reaped the benefits of testosterone. I'd wait 6 weeks as absolute bare minimum. 8 to 12 is more appropriate. Numbers are secondary to symptom relief in the trt game.
 
Well, the last time I asked this question to Dr. Saya at Defy Medical (through my consult nurse), the reply was to wait at least 1 hour after application. We also talked about waiting 8 hours after application on a subsequent test to see how levels decayed relative to SHBG retention. So I guess maybe the proper answer is to use multiple time frame blood tests and see what the labs say.
 

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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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