tests

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Little help needed with labs

Greetings wise men- Started TRT in early Jan. The protocol I was given was Test Cyp 200mg once a week and an AI 1mg every other day. That lasted about a week because I felt so bad. After doing more homework I cut my test down to about 160mg a week, split into two doses, and ditched the AI...
- sladedog
- Thread
- Apr 7, 2023
- tests
- Replies: 3
- Forum: Testosterone Basics & Questions
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LabCorp Vs Quest free testosterone lab ranges: Why are they different?

Quest Diagnositcs' range is 35-155 pg/mL for Free Testosterone. That's 3.5-15.5 ng/dL. Labcorp's range is 9-25 ng/dL. That's a big difference. 3.5-15.5 and 9-25. My question is: If you tested at 25 ng/dL on a Labcorp test, does that mean you would've tested at 15.5 ng/dL on the Quest...
- GeorgieBoy
- Thread
- Aug 30, 2020
- labs tests
- Replies: 42
- Forum: Blood Test Discussion
C
New User

Hey all, I'm introducing myself as a new user to ExcelMale. I have been visiting this site for a long while, but only recently joined the forums to get some direct information if possible. I started TRT about 3 years ago when my T levels were just at the recommended cutoff for non-HIV infected...
- CuirPork
- Thread
- Sep 29, 2019
- exhaustion tests trt
- Replies: 3
- Forum: Introductions
Guidance with Initial Labs (very low Free-T)

Help Reading Initial Labs? Hey all, New here, first post! I just got my initial labs en route to a Defy consultation (2-3 weeks out). I'm somewhat new to this so I would really appreciate some guidance reading the results. Background: 37 / 5'11" / 190lbs / ~18-20% body fat Gyno as a...
- Reason
- Thread
- Jan 26, 2018
- Replies: 11
- Forum: Blood Test Discussion
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29 year old, living in New York, questions about starting bloodwork.

Hey everyone, sorry if this is in the wrong spot. I ran through some of the stickies, and boy is there a lot of information so I may have overlooked what I need. I'm 29 years old and I check many, sometimes most of the questions on low test questionnaires. Low libido, lethargy, weaker...
- Cyberslick18
- Thread
- Jun 16, 2017
- Replies: 8
- Forum: Testosterone Basics & Questions

TRT Hormone Predictor Widget

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