ExcelMale
Menu
Home
What's new
Latest activity
Forums
New posts
Search forums
What's new
New posts
Latest activity
Videos
Lab Tests
Doctor Finder
Buy Books
About Us
Men’s Health Coaching
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Differences Between LabCorp and Quest Sensitive Estradiol and Testosterone Lab Test Ranges
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Nelson Vergel" data-source="post: 177132" data-attributes="member: 3"><p>I answer this question here: <a href="https://www.excelmale.com/forum/threads/liver-values-ast-alt-missing-from-new-bloodwork.20943/#post-177122" target="_blank">Liver Values (AST/ALT) missing from new bloodwork</a></p><p></p><p>1. Is there a difference between Estradiol Sensitive and Estradiol Ultra Sensitive? Mine was 45 on both of my tests this year. The Labcorp range is 8.0-35.0 and the Quest range is < OR = 29 pg/mL.</p><p></p><p>There are the same test. Quest chose to call theirs ultrasensitive. Lab ranges mean nothing for estradiol except for the lowest value which we know from studies should not be low (approx 15 pg/ml) due to bone loss.</p><p></p><p>For men with testosterone under 675 ng/dL (<a href="https://academic.oup.com/jes/article/3/10/1759/5526748" target="_blank">NHANES cohort</a>), these were median estradiol levels (measured by ECLIA, not sensitive test).</p><p></p><p>[ATTACH=full]9677[/ATTACH]</p><p></p><p>Source: <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6749840/" target="_blank">Age-Specific Serum Total and Free Estradiol Concentrations in Healthy Men in US Nationally Representative Samples</a></p><p></p><p>If we assume that sensitive E2 may be lower than regular by 20% in healthy men, then assume a max median E2 by LC/MS of 30 mg/mL for TT under 700 ng/dl.</p><p></p><p>This study also shows the predicted (ECLIA) estradiol for different T blood levels:</p><p></p><p>[ATTACH=full]9678[/ATTACH]</p><p></p><p><span style="font-size: 18px"><strong><a href="https://www.excelmale.com/forum/threads/predicted-estradiol-and-dht-from-different-testosterone-doses.20830/" target="_blank">Predicted Estradiol and DHT from Different Testosterone Doses</a></strong></span></p><p></p><p></p><p>2. On the free Test, the Labcorp range is 6.8-21.5 and mine in January was 27.2. On the Quest test last week my result was 334.6 and the range is 35.0-155.0 pg/mL</p><p></p><p>Free Testosterone is about 2% of total. Just multiply your total T by 0.20 to get to what your expected free T is.</p><p></p><p>I tend to agree more with Quest's free testosterone range. I had sent several emails to LabCorp to complain about their low and narrow range but they never addressed it.</p></blockquote><p></p>
[QUOTE="Nelson Vergel, post: 177132, member: 3"] I answer this question here: [URL='https://www.excelmale.com/forum/threads/liver-values-ast-alt-missing-from-new-bloodwork.20943/#post-177122']Liver Values (AST/ALT) missing from new bloodwork[/URL] 1. Is there a difference between Estradiol Sensitive and Estradiol Ultra Sensitive? Mine was 45 on both of my tests this year. The Labcorp range is 8.0-35.0 and the Quest range is < OR = 29 pg/mL. There are the same test. Quest chose to call theirs ultrasensitive. Lab ranges mean nothing for estradiol except for the lowest value which we know from studies should not be low (approx 15 pg/ml) due to bone loss. For men with testosterone under 675 ng/dL ([URL='https://academic.oup.com/jes/article/3/10/1759/5526748']NHANES cohort[/URL]), these were median estradiol levels (measured by ECLIA, not sensitive test). [ATTACH type="full" alt="mean total estradiol in men.jpg"]9677[/ATTACH] Source: [URL='https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6749840/']Age-Specific Serum Total and Free Estradiol Concentrations in Healthy Men in US Nationally Representative Samples[/URL] If we assume that sensitive E2 may be lower than regular by 20% in healthy men, then assume a max median E2 by LC/MS of 30 mg/mL for TT under 700 ng/dl. This study also shows the predicted (ECLIA) estradiol for different T blood levels: [ATTACH type="full" alt="testosterone estradiol DHT.jpg"]9678[/ATTACH] [SIZE=18px][B][URL='https://www.excelmale.com/forum/threads/predicted-estradiol-and-dht-from-different-testosterone-doses.20830/']Predicted Estradiol and DHT from Different Testosterone Doses[/URL][/B][/SIZE] 2. On the free Test, the Labcorp range is 6.8-21.5 and mine in January was 27.2. On the Quest test last week my result was 334.6 and the range is 35.0-155.0 pg/mL Free Testosterone is about 2% of total. Just multiply your total T by 0.20 to get to what your expected free T is. I tend to agree more with Quest's free testosterone range. I had sent several emails to LabCorp to complain about their low and narrow range but they never addressed it. [/QUOTE]
Insert quotes…
Verification
Post reply
Share this page
Facebook
Twitter
Reddit
Pinterest
Tumblr
WhatsApp
Email
Share
Link
Sponsors
Forums
Testosterone Replacement, Low T, HCG, & Beyond
Blood Test Discussion
Differences Between LabCorp and Quest Sensitive Estradiol and Testosterone Lab Test Ranges
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top