[Semi-micromethod for the assay of vitamin E. Use in neonatal pharmacology]

A micromethod using 250 mul of plasma was described for assaying vitamin E. The complete extraction of the plasmatic vitamin E was made possible. The sensitivity and occurency of this method are particularly suitable in pediatric determinations. The vitamin E plasmatic levels were measured in the low birth-weight newborn given or not a 10 mg vitamin E supply in the feeding.