Testosterone Blood Tests for Dummies

[centy]

Bros -

Can someone explain to me the difference between :

Testosterone, Serum
Testosterone, Free
and % Free Testosterone

How do these numbers fit together? What's the most important indicator?

 

[centy]

K to all

 

[Chocolate_Thunder]

Not sure, All I know is I told my Dr. I wanted to be tested for all and he said ok. Nelson, Needto or 8and 20 will have the proper answer for you.

 

[centy]

You guys drive a tough bargain.

Fine. K upped to 1000?

 

[Donnie Darko]

Total testosterone is just that...the total amount of bound and free testosterone in the human body or at least in the sample of blood given.

Free testosterone is bioavailable testosterone that can enter cells to help with protein synthesis.

Percent free may not reflect actual free amounts in the system though (but very close). This would be a percentage of bound hormone compared to non-bound hormone, but the HPLC machine can be wrong on all accounts.

 

[Mavafanculo]

total test number isnt useful in most cases.

free test is test not bound to shbg and bioavailable

 

[centy]

So if I were to compare these two test results:

Test 1 Test 2
Serum 373 Serum 279
Free 10.00 Free 9.81

Would these be considered to be close because of the free test level? There was quite a drop in Serum lever (hell if I know why.) Goddamnit i'm getting confused.'!!!alsdfk g'saldf 'jgal