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Description
In healthy adults the total concentration sits around 200 to 600 pmol/L, but the upper reference limit varies by laboratory and by analytical platform

Microneedling enhances drug delivery in three ways simultaneously, per the StatPearls dermatology reference and the Coelho 2022 review
They occupy entirely different evidence tiers: Cerebrolysin has decades of clinical trial data and systematic reviews, while Dihexa has only preclinical animal studies with questioned integrity

The three-step calculation for any dose Step 1: Know your concentration
