T Nation

T-level tests

Hi. I have planned to check my T-levels, but what are the necessary values which I need to check to get the most accurate info? (LH, SHBG ja FSH) ? what about estradiol?

To get the most accurate value for testosterone, you need ONLY the free testosterone reading and the normal range reported by that lab from subjects using their method.

Estrogen is also worth knowing but is a different subject.

LH readings are not reliable because LH levels vary dramatically with each blood sample, due to the pulsatile nature of its release. To get an accurate value you need to take a sample every 15 minutes for three hours. Few bother to do this.