ZRT v Labcorp - The results are in.

[Billegitimate]

I have the results. First, background: I did Labcorp blood draw at about 11:30 in the morning, drove back home and did the ZRT test at 11:40. I haven't touched any T cream in more than 2 weeks, and even then I didn't get it on my fingers. Switched to injections so no more transdermals.

I had my Labcorp results the next day. And that included everything on privatemdlabs female hormone panel. I sent the ZRT package in about an hour after I took the test and received my results yesterday, 9 days later.

Labcorp - TT 1062 (348-1197) E2 29.5 (7.6-42.6)
ZRT - TT 1246 (400-1200) E2 20 (12-56)

So ZRT says too high T and very low E2. Labcorp says high T and upper third E2. No, not the sensitive test.

So I'm done using ZRT for a diagnostic input. I still have 3 kits left so I'll continue using them just as I did this one, paired with labcorp for comparison. I'm curious if perhaps the occasional contamination with a TD lasts a really long time. I had a ZRT test in November when I was using T cream which showed my total T at 12248. No, not a typo.

 

[Megatron28]

Just curious. How do the cost of the two compare? And does zrt provide everything the Labcorp female panel provides?

 

[Billegitimate]

The female hormone panel from privatemdlabs is $63. A zrt T and E2 test is $70. No comparison. Only thing for zrt is no blood draw, just a finger prick. I'm over the needle phobia now, so not a factor any longer.

 

[Megatron28]

Actually with the 15% coupon code, privatemdlabs is cheaper.

 

[JOWS7]

Check the assay methods for E2. Was the ZRT performed by mass spectrometry? Look for something like LS/MS. Anyway, mass spectrometry is the most accurate method for determining serum counts. Contrary to popular belief, it is not a "sensitive" assay that should be preferred rather a mass spectrometry. Other methods like the Roche ECLIA are quicker and cheaper but studies show higher levels of E2 when compared to a MS assay.