Table 1. Prior to starting treatment, it is essential to get a thorough blood workup mentioned in 1 .

Tests to be done before medical treatment of PHL
Complete blood cell count
Comprehensive metabolic panel
TSH
Iron evaluation (serum ferritin, serum iron, total iron-binding capacity)
Free and/or total testosterone and DHT
Vitamins D and B12
Additionally, in women—DHEAS and serum prolactin

Abbreviations: DHEAS, dehydroepiandrosterone sulfate; DHT, dihydrotestosterone; TSH, thyroid-stimulating hormone.