Should Cortisol Blood Test be Done Before 9am Even if I Work Night Shifts?

Pharma / TRT Testosterone Replacement
1

Hey all, kind of a specific question:

Went to have some pre TRT comprehensive bloods done, and was told the cortisol test needs to be drawn by 9am. Just wanted to clarify- is relative to the average circadian rhythm? Because I work nights, and generally sleep from 2-3am until 10-11am.

If I wake up earlier than normal, will this affect my cortisol levels?

Thanks

2

Not wanting to hijack your thread Sean, but i’d like an answer to this question in relation to blood tests in general. I work some pretty unsociable hours (this week for instance M 0300, T 0700, W-F 1900, S 1600), do timings for blood tests make a huge difference?

1 Like
3

@systemlord @KSman Hey guys, going to get these bloods done in the next couple days. My doc is clueless so I’m hoping for a little insight.

Thanks, I really appreciate it guys.

4

Should be AM Cortisol, done at 8AM or 1 hour after waking up.

1 Like