Amniotic Fluid Analysis

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Also known as: Amniocentesis; Foetal Lung Maturity Tests
Formal name: Amniotic Fluid Analysis
Related tests: Triple/Quad Screen; Maternal AFP (alpha-fetoprotein); Blood Typing; Bilirubin; First Trimester Down Syndrome Screen; Chorionic Villus Sampling; fFN (Foetal fibronectin); Chromosome Analysis

At a Glance

Why Get Tested?

To detect and diagnose some birth defects, genetic diseases, and chromosome abnormalities in a foetus, especially if pregnancy screening tests are abnormal; to help diagnose and monitor haemolytic disease in a foetus

When to Get Tested?

Between 15 and 20 weeks of gestation to test for genetic diseases, chromosome abnormalities, and open neural tube defects; when it is suspected that a foetus has haemolytic disease, about every 14 days

Sample Required?

A sample of amniotic fluid is obtained using a procedure called amniocentesis

Test Preparation Needed?

You may be instructed to have a full or empty bladder prior to amniocentesis