Update Type: Test Methodology Changed
Test Updated: 03/26/2024
Test Overview
Test Methodology
Enzyme-linked immunosorbent assay (ELISA)
Reference Range *
Units: ng/mL
Adults (BMI=22)
Males: 0.7-5.3; Females: 3.3-18.3
Contact laboratory for other BMI reference ranges.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Monday, Wednesday, Saturday
Analytic Time
15 - 20 days
Soft Order Code
FLEP
MiChart Code
Leptin Level (Sendout)
Laboratory
Sendout
Reference Laboratory
Mayo FLEP (91339) (Esoterix Endocrinology 500237)
Section
Special Testing
Specimen Requirements
Collection
A fasting specimen is recommended. Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a screw capped plastic vial and send to Specimen Processing ambient.
Collection Instructions
Collect specimen in a red top or SST tube. Spin and aliquot within 45 minutes of collection. Send to Specimen Processing frozen
Alternate Specimen
Lavender top (EDTA) is acceptable.
Fasting Specimen
Fasting specimen recommended.
Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum
Storage Temperature
Frozen preferred, ambient, refrigerated acceptable
Additional Information
Test sent to Mayo Medical Laboratories; performed by Esoterix Endocrinology.
Billing
CPT Code
83520
Fee Code
AA082
LOINC
21365-2