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Study - Low Vitamin D linked to Low HDL Cholesterol

Do Vitamin D Levels Affect Cholesterol? (links at bottom) Higher vitamin D levels appear to be associated with higher total cholesterol levels and higher HDL cholesterol levels, according to a new study presented at the American College of Cardiology's (ACC) 65th Annual Scientific Sessions.1...
- John O'Connor
- Thread
- Apr 7, 2016
- Replies: 0
- Forum: Testosterone and Men's Health Articles
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TSH stable for 5+ years on 50mcg levothyroxine. Any reason to check Reverse T3?

I've been steady on 50mcg levothyroxine for 5+ year now. TSH is always in the 1.0 - 1.3 range, so i haven't even checked Free T3, or Free T4 in last 5 years, and I've never had Reverse T3 checked. I'm going for blood work on 4/13 and it will include TSH, Free T3 & Free T4. Does anyone...
- John O'Connor
- Thread
- Apr 5, 2016
- Replies: 7
- Forum: Thyroid, DHEA, Pregnenolone, Progesterone, etc
J
I need ARUP Labs Estradiol Sensitive number.

Can someone clarify which test I should use? Doctor could not find "sensitive" version and asked me to specify which test. It looks like ARUP labs is their preferred provider. http://ltd.aruplab.com/ 1.2006160Free Estradiol by ED/LC-MS/MS Ordering Recommendation: Direct measure of free...
- John O'Connor
- Thread
- Mar 31, 2016
- Replies: 4
- Forum: Testosterone Basics & Questions
J
Specific Blood Work Questions:

Nelson (or others), can you clarify questions I have regarding blood work? FYI, I'm in the process of applying to Physician Assistant graduate programs, so I'm fairly well educated in basic chemistry, physiology, etc. 1) Is SHBG approximation using Total & Free Testosterone adequate, or is it...
- John O'Connor
- Thread
- Mar 30, 2016
- Replies: 7
- Forum: Blood Test Discussion

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