Overview: Progesterone TestIntroduction: The Progesterone Test measures progesterone to diagnose pregnancy or infertility issues, causing irregular periods. Aligned with 2023 ACOG guidelines, it uses biochemical methods for high specificity, supporting hormonal screening. This test is critical for guiding diagnosis, treatment planning, and improving outcomes in endocrinology for patients with suspected pregnancy complications or infertility.
Other Names: Progesterone Assay, P4 Test.
FDA Status: Laboratory-developed test (LDT), meeting endocrinology standards for diagnostic accuracy.
Historical Milestone: Progesterone testing began in the 1970s with reproductive research. Biochemical methods improved in the 2000s, enhancing diagnostic precision.
Purpose: Measures progesterone to diagnose pregnancy or infertility issues, guides treatment, and evaluates patients with irregular periods.
Test Parameters: 1. Progesterone Level
Pretest Condition: Fasting for 10-12 hours required. Collect serum, plasma, or saliva. Report history of irregular periods or pregnancy symptoms.
Specimen: Serum (SST, 2-5 mL), Plasma (EDTA, 2-4 mL), Saliva (sterile container, 1-2 mL). Transport in a biohazard container.
Sample Stability at Room Temperature: 8 hours
Sample Stability at Refrigeration: 7 days
Sample Stability at Frozen: 6 months
Medical History: Document irregular periods, infertility, or pregnancy history. Include current medications, especially fertility drugs.
Consent: Written consent required, detailing the tests purpose, pregnancy/infertility implications, and risks of sample collection.
Procedural Considerations: Uses immunoassays or liquid chromatography to measure progesterone levels. Results are available in 1-2 days, supporting clinical decisions. Performed in laboratories, often for pregnancy or infertility diagnosis.
Factors Affecting Result Accuracy: Improper fasting or sample hemolysis can affect results. Menstrual cycle phase impacts progesterone levels.
Clinical Significance: Low progesterone confirms infertility or pregnancy complications, guiding supplementation. Normal levels may require serial testing or ultrasound.
Specialist Consultation: Consult an obstetrician or endocrinologist for result interpretation and treatment planning.
Additional Supporting Tests: hCG levels, pelvic ultrasound, or luteinizing hormone testing to confirm pregnancy or infertility diagnosis.
Test Limitations: Non-specific for certain conditions; clinical correlation is needed. Sample quality affects sensitivity.
References: ACOG Infertility Guidelines, 2023; Fertility and Sterility, Speroff L, 2022.
