New system uses electrical conductivity to measure dry blood samples used in infant HIV screening, testing for metabolic disorders
Researchers from The University of Texas at Arlington have demonstrated that electrical conductivity can be an effective means to precisely measure the amount of blood present in dry blood spot analysis, providing a new alternative to the current preferred approach of measuring sodium levels. Dry blood spots are a pinprick of blood blotted on filter paper and allowed to air dry, which is then sent to a laboratory for analysis. Simple and inexpensive, dry blood spot analysis is routinely used to screen newborns for metabolic disorders and has also proven effective in diagnosing infant HIV