CBC (Hgb, Hct, RBC, WBC, Pit)
PT with INR
Vitamin D, 25 Hydroxy, LC/MS
Most important test is free T since that was where my results were out of range. Vit D is for acne, not hair.
No B5 unless you want to rock the shaved head look. Cysteine doesn't matter.
Take at least 10000iu of vitamin A (beta-carotene) if you are taking 2000iu of vitamin D.
Supplementing vit D will of course make your vit D blood test inaccurate.
Also can FSH tested if possible