Converting Lab Reults Units

Pharma TRT
1

Hello, I am a Canadian trying to interpret his lab results. Seems the tests here use different units than what I see on this site, as well as what are used in a book on Testosterone I have (“Testosterone for Life” by Abraham Morgentaler).

Can someone help me convert these results:

For Total T, I need to know:

  1. what 12.8 nmol/L is in “ng/dL”

For Free T, I need two conversions:
2. 70.0 pmol/L in the standard pg/mL
3. 48.6 pmol/L also in pg/mL

Finally, for e2, I would like to know:
4. 88 pmol/L in “whatever the standard is” (I see people sharing #s without the unit type)

If someone could do the math, I would really appreciate it! Or if you could tell me how to do the conversions myself? (Warning: I am a History major – not too great at math or chem.)

Thanks!

2
3

Thanks, VTBalla34. Using the site I got two numbers I wanted, but I am haivng trouble with the other two.

For total T:
(12.8 nmol/L) / (0.0347) = 368.87 ng/dL

For E2:
(88 pmol/L) / (3.671) = 23.97 pg/mL

So far so good. But for the Free T, the units are different. I don’t want ng/dL used for Total T, I want pg/mL. Also, I am assuming that the conversion factor for Free T is the same as it is for Total T – 0.0347. Can someone confirm that?

Anyway, using 0.0347:
(70.0 pmol/L) / (0.0347) = 2017.29 ng/dL and
(48.6pmol/L) / (0.0347) = 1400.58 ng/dL

But how can I convert the “ng/dL” to “pg/mL”?

Thanks to any who can shed some light.

  • Junk2222
4

[quote]junk2222yard wrote:
Thanks, VTBalla34. Using the site I got two numbers I wanted, but I am haivng trouble with the other two.

For total T:
(12.8 nmol/L) / (0.0347) = 368.87 ng/dL

For E2:
(88 pmol/L) / (3.671) = 23.97 pg/mL

So far so good. But for the Free T, the units are different. I don’t want ng/dL used for Total T, I want pg/mL. Also, I am assuming that the conversion factor for Free T is the same as it is for Total T – 0.0347. Can someone confirm that?

Anyway, using 0.0347:
(70.0 pmol/L) / (0.0347) = 2017.29 ng/dL and
(48.6pmol/L) / (0.0347) = 1400.58 ng/dL

But how can I convert the “ng/dL” to “pg/mL”?

Thanks to any who can shed some light.

  • Junk2222

[/quote]

For your pmol values to get them into pg/ml you have to know the molar mass of testosterone (288.42) to work it out.

So in your case

70.0 x 288.42 = 20189 pg/l or 20.189 pg/ml
48.6 x 288.42 = 14017 pg/l or 14.017 pg/ml

So for next time just divide the pmol value by 3.46 and you will get the pg/ml value when working with testosterone.

5

Thanks iroczinoz and VTBalla34, really appreciate you guys taking the time to school a new student.

Much appreciated,
Junk2222

6

also: http://www.unc.edu/~rowlett/units/scales/clinical_data.html