Reading and Comparing blood work from Different Labs

[kewe]

I bounce between Quest and Poirvate MD labs - where ever I have a coupon from and Private Md I have a 15% off so I used it but how do I really compare to my previous labs that where my TRT doc uses that is from Quest.

Example:

11/2 Testosterone , total, males (adult) 718 (range 250 - 827 ng/dl) Quest

1/16 Testosterone, Serum 1308 (Range 348-1197 ng/dl) Private MD

or

11/2 Testosterone, Free. LC/MS/MS 148.1 (Range 46-224 pg/ml) Quest

1/16 Free Testosterone, direct 40.6 High (Range 6.8-21.5 pg/ml) Private MD


How do I compare these?


Lastly

11/2 Estradiol 27 Range < or = 39 quest

1/6 Estradiol 9.6 Range 7.6-42.6 pg/ml Primate MD

[krugerr]

The Nebido site has a conversion tool, I havent used this myself, but noticed it the other day. Give this a try.

Testosterone Conversion - Free tool to converting the testosterone level

[Chauffeur]

Some tests are unable to accurately be compared to each other. Look at which testing methodology (LC-MS/MS, ECLIA, etc.) was used for the tests.

If the same methodology was used to test your sample at both labs, the results should be comparable...or close enough to be called accurate.

But if your blood sample was tested using 2 different methodologies your results are going to look a bit different, or the unit of measurement may be different.

Can't often accurately compare results of tests in which different testing methods were used.

[Simon1972]

go to the same lab always, its in your best interest and makes these situations non existant.

otherwise yes use the nebido tool below , i have used that in the past.

[kewe]

Anyone can explain how the ranges are made?

[Bonaparte]

There's no conversion necessary, as they use the same units of measure.
The ranges are different because they each just gathered the values from a sample population (say, 1,000 random males patients aged 20 to 40) and create a standard deviation chart by which they define the "normal range".

For free test, Quest has you in the mid-range, whereas Labcorp (Private labs MD is only a middle-man) has you at twice the normal max. Obviously your test levels rose a lot between the two tests, so I'm assuming that's what you started a cycle or something.