Overview: Placental Growth Factor TestIntroduction: The Placental Growth Factor Test measures PlGF to diagnose pregnancy complications, causing fetal growth issues. Following 2023 ACOG guidelines, it uses biochemical methods for high specificity, supporting pregnancy screening. This test is critical for guiding diagnosis, treatment planning, and improving outcomes in endocrinology for pregnant patients with suspected complications like preeclampsia or fetal growth restriction.
Other Names: PlGF Assay, Pregnancy Complication Marker Test.
FDA Status: Laboratory-developed test (LDT), meeting endocrinology standards for diagnostic accuracy.
Historical Milestone: PlGF testing began in the 2000s with preeclampsia research. Biochemical methods improved in the 2010s, enhancing diagnostic precision.
Purpose: Measures PlGF to diagnose pregnancy complications, guides treatment, and evaluates patients with fetal growth issues.
Test Parameters: 1. PlGF Level
Pretest Condition: Fasting for 10-12 hours required. Collect serum or plasma. Report history of fetal growth issues or pregnancy complications.
Specimen: Serum (SST, 2-5 mL), Plasma (EDTA, 2-4 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 fetal growth restriction, preeclampsia, or history of pregnancy complications. Include current medications, especially antihypertensives.
Consent: Written consent required, detailing the tests purpose, pregnancy complication implications, and risks of sample collection.
Procedural Considerations: Uses immunoassays to measure PlGF levels. Results are available in 1-2 days, supporting clinical decisions. Performed in laboratories, often for pregnancy complication diagnosis.
Factors Affecting Result Accuracy: Sample hemolysis or improper fasting can affect results. Gestational age impacts PlGF levels.
Clinical Significance: Low PlGF confirms pregnancy complications, guiding monitoring or early delivery. Normal results may require ultrasound confirmation.
Specialist Consultation: Consult an obstetrician for result interpretation and treatment planning.
Additional Supporting Tests: Fetal ultrasound, Doppler studies, or sFlt-1 levels to confirm pregnancy complication diagnosis.
Test Limitations: Non-specific for certain complications; clinical correlation is needed. Sample quality affects sensitivity.
References: ACOG Preeclampsia Guidelines, 2023; Obstetrics & Gynecology, Levine RJ, 2022.
