Overview: Androstenedione TestIntroduction: The Androstenedione Test measures androstenedione levels to diagnose adrenal or ovarian disorders, which may cause abnormal puberty, infertility, or excessive hair growth. Following 2023 Endocrine Society guidelines, it uses an immunoassay for high sensitivity, aiding in endocrine screening. This test is critical for guiding treatment, monitoring hormone levels, and improving outcomes in endocrinology for patients with suspected adrenal or ovarian issues.
Other Names: Androstenedione Assay, Adrenal Hormone Test.
FDA Status: Laboratory-developed test (LDT), meeting endocrinology standards for diagnostic accuracy.
Historical Milestone: Hormone testing advanced in the 1970s with radioimmunoassays. Androstenedione assays emerged in the 1980s, and by the 2000s, high-sensitivity immunoassays improved detection of adrenal and ovarian disorders.
Purpose: Diagnoses adrenal or ovarian disorders, guides treatment, and monitors hormone levels in patients with abnormal puberty, infertility, or hirsutism.
Test Parameters: 1. Androstenedione
Pretest Condition: Fasting for 10-12 hours required to stabilize hormone levels. Collect serum, plasma, or saliva after overnight fasting. Report symptoms like infertility or hirsutism, and list medications like hormone therapies.
Specimen: 2-5 mL serum (SST), 2-4 mL plasma (EDTA), or 1-2 mL saliva (sterile container). Centrifuge serum or plasma within 1 hour. Transport in a biohazard bag within 8 hours.
Sample Stability at Room Temperature: 8 hours
Sample Stability at Refrigeration: 7 days
Sample Stability at Frozen: 6 months
Medical History: Document symptoms, history of adrenal or ovarian issues, or family history of endocrine disorders. Include current medications, especially hormone therapies.
Consent: Written consent required, detailing the tests purpose, diagnostic implications, and potential need for further testing or treatment.
Procedural Considerations: Uses an immunoassay to measure androstenedione levels. Results are available in 1-2 days, enabling rapid clinical decisions.
Factors Affecting Result Accuracy: Non-fasting samples or hormone therapies may alter results. Hemolysis or improper storage can degrade samples.
Clinical Significance: Elevated androstenedione levels suggest adrenal or ovarian disorders, prompting imaging or treatment. Normal levels may require additional hormone tests.
Specialist Consultation: Consult an endocrinologist for result interpretation. A gynecologist referral is advised for ovarian-related issues.
Additional Supporting Tests: DHEA-S test, testosterone test, or adrenal imaging to confirm adrenal or ovarian disorders.
Test Limitations: False positives may occur with stress or hormone therapy. Results require clinical correlation with other hormone levels.
References: Endocrine Society Guidelines, 2023; Journal of Clinical Endocrinology and Metabolism, Auchus RJ, 2022.
