Blood draw site and blood matrix influence mineral assessment
Mikail Alejandro, Kathleen Schultz, David W. Killilea
This study examines how blood draw site and matrix affect mineral concentrations in samples, finding significant variations in calcium, copper, iron, and magnesium levels between capillary/venous and plasma/serum samples.
PLoS ONE · Dec 8, 2025Peer-reviewedBiochemistry