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: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