FOR HEALTHY HAIR : ALL THESE FOLLOWING FACTORS ARE IMPORTANT
Hormone levels
DHEAS, Testosterone, Androstenedione, Prolactin, Follicular Stimulating Hormone, and Leutinizing Hormone
Serum Iron, Serum Ferritin, TIBC
The amount of ferritin in your blood is directly proportional to the amount of iron stored in your body. Normal female levels: 12-150 ng/ml (nanograms per milliliter)
Thyroid Stimulating Hormone (TSH)
Determines whether the thyroid gland is functioning properly.
Complete Blood Count (CBC)
A complete blood count (CBC) provides important information about the kinds and numbers of cells in the blood, especially red and white blood cells and platelets.