Ulta Lab Tests

Inhibin A Test

The Inhibin A Test measures levels of inhibin A, a hormone produced by the ovaries and placenta. Abnormal levels may indicate ovarian function disorders, fertility issues, or serve as a marker in prenatal screening for chromosomal abnormalities such as Down syndrome. This test provides insight into reproductive health, hormone regulation, and pregnancy monitoring, supporting evaluation of ovarian and placental activity.

Blood
Blood Draw
There are no preparation instructions.

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Inhibin A

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The Inhibin A Test test contains 1 test with 1 biomarker .

Inhibins are heterodimeric protein hormones secreted by granulosa cells of the ovary in females and Sertoli cells of the testis in males. Inhibins selectively suppress the secretion of pituitary follicle-stimulating hormone (FSH) and also have local paracrine actions in the gonads. In females, inhibin A is primarily produced by the dominant follicle and corpus luteum, whereas inhibin B is primarily produced by small developing follicles. Serum inhibin A and B levels fluctuate during the menstrual cycle. Inhibin A is low in the early follicular phase and rises at ovulation to maximum levels in the midluteal phase.

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