:Normal range
28 wk: < 0.075 mg /dl < 1.3 mmol/L
40 wk: < 0.025 mg /dl < 0.4 mmol/L
Comment: Measurement of bilirubin by optical density is used for prenatal assessment of severity of hemolytic disease of the fetus secondary to Rh. Incompatibility
Sample: 10 ml of sterile amniotic fluid, protect from light, keep refrigerated