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Analysis of dipalmitoyl phosphatidylcholine in amniotic fluid by high-performance liquid chromatography
J G Alvarez1, B Slomovic, J Ludmir
1Department of Obstetrics and Gynecology, Beth Israel Hospital, Harvard Medical School, Boston, MA 02215, USA.
Abstract:
A novel method for the determination of dipalmitoyl phosphatidylcholine (DPPC) in amniotic fluid by high-performance liquid chromatography (HPLC) is described. Aliquots of 50 microliters of amniotic fluid were hydrolyzed with phospholipase C from Bacillus cereus and the resulting dipalmitoylglycerol analyzed by HPLC. Run-to-run and day-to-day precision for DPPC analysis were 4.2 and 6.1%, respectively, and analysis time was 10 min. Recoveries for DPPC ranged between 92 and 98%. In summarizing, this method provides a high precision and fast turnaround time means for the analysis of DPPC in amniotic fluid.