Glossary
| Term | Description |
|---|---|
| Inhibin-A | Inhibin-A (INH) is a hormone made by the placenta and the developing baby. Maternal blood levels remain relatively constant through the 15th and 20th weeks of pregnancy. Inhibin-A is only used in the calculation for the risk for Down syndrome. Maternal blood levels of inhibin-A may be higher than usual in a pregnancy if the baby is affected with Down syndrome.
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