Platelet-rich plasma uses a concentrate of a person's own platelets, injected or applied with microneedling, to prompt skin to rebuild collagen. Clearest benefits are modest gains in texture, firmness, thickness, and satisfaction; results fade over months. Evidence is mixed and low-certainty. Side effects are mild and brief; the main serious danger is unsafe blood handling at unlicensed providers. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Platelet count | 200–400 ×10⁹/L | Confirms enough platelets for a potent preparation and safe procedure |
| Hemoglobin / hematocrit | Hgb ~13–15 g/dL (women), ~14–16 g/dL (men) | Identifies anemia that can affect blood draw tolerance and healing |
| Coagulation (PT/INR, aPTT) | INR ~0.9–1.1 (off anticoagulants) | Flags bleeding tendency that raises bruising and bleeding risk |
| HIV / hepatitis B & C screen | Non-reactive | Establishes baseline infection status and informs safe handling |
| Fasting glucose / HbA1c | Glucose 70–85 mg/dL; HbA1c <5.4% | Poorly controlled blood sugar impairs wound healing and skin repair |
Cadence: Baseline screening before starting; clinical and photographic assessment ~4–6 weeks after a session, at end of the initial series, then every 6–12 months at maintenance visits