Effect of Hemolysis on Routine Blood Gas and Whole Blood Analytes.

Background: Hemolysis is a major pre-analytical concern for many laboratory analytes; however, instruments utilized for whole blood chemistries and blood gas measurements lack the ability to detect and measure the degree of hemolysis. This study evaluated the effect of hemolysis on 13 routine whole blood and blood gas analytes and compared visual assessments of hemolysis to measured hemolysis (H-index).

Methods: Remnant whole blood samples (n = 85) were split into 2 portions and aspirated through a syringe one or more times.

Growth in preterm infants fed either a partially hydrolyzed whey or an intact casein/whey preterm infant formula.

Objective: To compare feeding tolerance, nutrient intake and growth in preterm infants (< or =32 weeks, < or =1750 g) fed either a standard nonhydrolyzed whey-casein (nHWC) or a partially hydrolyzed whey (pHW) preterm infant formula.

Study Design: In this double-blind randomized controlled trial infants were fed either formula for at least 3 weeks. Intake was monitored daily, serum chemistries and growth weekly.