What type of testing is done for amniotic fluid to check for bilirubin levels?

Bilirubin levels in amniotic fluid are primarily assessed through chemical analysis. This type of testing involves measuring the concentration of bilirubin to evaluate conditions such as hemolytic disease of the newborn. Elevated levels of bilirubin in amniotic fluid can indicate fetal distress and potential complications like Rh incompatibility.

Chemical analysis provides specific quantitative measurements of substances, making it suitable for determining bilirubin levels accurately.

Cytological analysis focuses on examining the cellular composition and structure of the fluid, which may not directly indicate bilirubin levels. Microbial culture seeks to identify potential infections by growing microorganisms from the fluid and is unrelated to bilirubin concentration. Genetic testing is used to determine genetic disorders and conditions, not to assess bilirubin levels. Thus, chemical analysis is the appropriate method for this particular evaluation.