EFFECTIVE DATE: March 22, 2024
TEST METHODOLOGY UPDATE
Leptin
Order Code: FLEP
Fee Code: AA082 (CPT 83520)
Reference Laboratory: Mayo FLEP (Esoterix Endocrinology)
Effective March 22, 2024, the test methodology for the Leptin assay referred to Esoterix Endocrinology has changed from Enzyme Immunoassay (EIA) to Enzyme-Linked Immunosorbent Assay (ELISA). This change has resulted in updates to specimen collection and handling and reference ranges as follows:
Specimen Collection: A fasting specimen is recommended (8-12 hour fast). Collect specimen in a red top or SST tube. Centrifuge and aliquot 1 mL of serum into a screw capped plastic vial within 45 minutes of collection. Freeze (preferred) or send at room temperature or refrigerated within 48 hours.
Reference Range: Adults (BMI=22): Male: 0.7 – 5.3 ng/mL, Female: 3.3 – 18.3 ng/mL. Please contact laboratory for other BMI reference ranges.