Bilirubin - amniotic fluid
Last updated: Thursday, 08, April, 2004
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2 mL amniotic fluid. Protect from light.
| Reference Interval|
Varies with gestational age.
Some laboratories express the result as µmol/L, others as an ODD450 (optical density difference at 450 nm).
Investigation of pregnancies at risk for Haemolytic disease of the newborn.
Increased levels indicate haemolysis.
A number of different graphs have been published correlating degree of risk with amniotic fluid bilirubin level at various gestational ages.
Bleeding into the amniotic fluid invalidates results.
Oepkes D. Eur J Obstet Gynecol Reprod Biol 2000; 92(1): 83-89.