This research is a preliminary, randomized, double blind clinical trial, which will examine the differences in PRP preparation methods, a single-spin centrifugation of 3000 rpm in 15 minutes compared to a double-spin centrifugation of 1500 rpm in 6 minutes followed by 2500 rpm in 15 minutes, on the results of Thrombocyte Concentration and Clinical Improvement of Androgenetic Alopecia.

Several examinations will be performed in every visit, including history taking, physical examination, trichoscopy and trichoscan. Laboratory evaluations (complete blood count) for the measurement of the thrombocyte for baseline and PRP will be performed for all assented subjects on the first visit. Each subject will be instructed to apply 5% topical minoxidil twice a day everyday as primary therapy during the study

Inclusion Criteria:

• Met the criteria of androgenic alopecia (Hamilton Norwood grade III-IV)
• Men between ages 25-59 years old
• Have stopped taking topical anti-androgen or minoxidil for at least one month, or oral anti-androgen or minoxidil for at least three months

Exclusion Criteria:

• alopecia of any other type
• subject with a history of keloid or blood coagulation disorders underwent anticoagulant therapy
• subjects on Non-Steroidal Anti-Inflammatory Drugs (NSAID) medications in seven days prior to the study
• subjects who had hair treatment using growth factors, including PRP and microneedling within at least six months prior to the study.

male

this is a double-blind masking study