This isn’t a ‘case’ post. It a question about the reference ranges Quest Diagnostics.
For years the test ordered by my endo was “Testosterone, Total, LC/MS/MS” with a ref range of 250-1100 ng/dL. This last test (that was ordered by a PA) was “Testosterone, Total, Males (Adult), Immunoassay” with a ref range 250-827 ng/dL.
With the latter test, my results were 831 ng/dL so now she want to reduce the dose.
Anyway I was curious to know if anyone knows the difference between these tests and has an opinion on the most appropriate test for TRT.
Thanks in advance for your reply.