T Nation

Test Calculator/Chart (Need Ranges)


#1

Can anyone direct me to a Free Testosterone chart that uses ng/dl?

I have been using the free Test calculators on the internet but cant seem to find a chart that matches up. Even when I do the conversions, it still seems screwy.

If no chart, can someone give me the low and high for free test ng/dl? Even a ballpark is ok. I saw on another page (8-25) ng/dl? sound about right? So confused.

Per the Nebido calculator

Free Testosterone 21.2 ng/dL = 1.93 %

Bioavailable Test 497 ng/dL = 45.2 %

Doesn’t give any ranges though…


#2

I cant vouch for the source, but this could be helpful


#3

This gives range too
https://www.labcorp.com/test-menu/35496/testosterone-free-direct


#4

This is where it is confusing me. It says 12.3 ng/dl , but my Free test says its 21.2 ng/dl. Something isn’t right… I am on the LOWER end of free test, for sure, because of my high SHBG, so why does this chart say im almost double the high end?


#5

Found this chart on another site.

TESTOSTERONE, FREE

Males (adult):

20 - <25 years: 5.25-20.7 ng/dL

25 - <30 years: 5.05-19.8 ng/dL

30 - <35 years: 4.85-19.0 ng/dL

35 - <40 years: 4.65-18.1 ng/dL

40 - <45 years: 4.46-17.1 ng/dL

According to this also, my free test looks great (21.2ng/dl). But I seriously doubt that is the case.

TT is around 1100/1000 Albumin 4.3 and SHBG 50…


#6

Converting labcorp ranges:

Gender/Age (y) Range (ng/dL)

Male

0 to 19 Not established

20 to 29 0.93 - 2.65

30 to 39 0.87 - 2.51

40 to 49 0.68 - 2.15

50 to 59 0.72 - 2.40

Over 59 0.66 - 1.81

Which cannot be accurate. They have the UoM incorrect on their website. If you look at quest (or anyone else) you will see something more like 4.6 - 22.4 ng/dL. So for the LabCorp ranges the UoM is ng/dL not pg/nL. So with that said a calculated free test of 18.7 - 21.2 ng/dL is not out of the question.


#7

Thanks bro.