1.
Am J Med Technol
; 44(9): 852-4, 1978 Sep.
Artigo
em Inglês
| MEDLINE
| ID: mdl-568387
RESUMO
The literature suggests that the presence of cellular debris and sediment in amniotic fluid samples may alter the value of the lecithin/sphingomyelin (L/S) ratios, with a loss of as much as 75 percent of the surface-active lecithin1 and consequently a marked change in the L/S ratio. We wish to report our findings on 22 amniotic fluids obtained by transabdominal amniocentesis and analyzed with and without preliminary centrifugation. We find the L/S ratio is indeed unaltered by centrifugation. However, the actual amounts of lecithin and sphingomyelin appear to be lower in centrifuged samples.