Blood Test - What Needs To Be Checked?

[ComeBackTemples]

Hi all

Hopefully not a duplicate search. I would appreciate if you could let me know for what needs to be checked in the blood when suffering from hair loss. Doing my research i came accross the following things to check:

Hormones
Testosterone
SHBG
FAI
TSH
FT4
Inflammation Marker
CRP-hs

Iron Status
Ferritin

Is that all or do you think something is missing, e.g. Vitamine D?

Many thanks for your assistance!