Epic Code LAB1231963 Leptin

Important Note

Patient should fast overnight prior to collection.

Test Name Alias

LAB3262 | Quest: 90367 | LEPTIN

Interface Order Alias

1231963

Clinical Information

Leptin is an adipocyte-derived hormone that is essential for normal body weight regulation. Leptin production is under neuroendocrine control so that serum concentrations vary directly with the amount of triglycerides stored in adipose tissue depots.

Specimen Requirements

Instructions

Patient should fast overnight prior to collection.

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube..

Also acceptable: One plain Red-top tube

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and refrigerate (2-8°C or 36-46) prior to transport.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and refrigerate (2-8°C or 36-46) prior to transport.

Specimen Transport Temperature

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46) (Minimum: 0.2 mL)

Rejection Criteria

Moderate hemolysis
Gross hemolysis
Hypericteric specimens
Specimens not collected and processed as indicated.

Specimen Stability

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 35 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Test Frequency

Performed: Monday, Thursday.
Results available in 4-8 days.

Reference Range

Pediatric male and female

5-9.9 Years	0.6-16.8 ng/mL
10-13.9 Years	1.4-16.5 ng/mL
14-17.9 Years	0.6-24.9 ng/mL

Adult Lean Subjects (18-71 Years) with BMI range of 18-25

Male	0.3-13.4 ng/mL
Female	4.7-23.7 ng/mL

Adult Subjects (19-60 Years) with BMI range of 25-30

Male	1.8-19.9 ng/mL
Female	8.0-38.9 ng/mL

Performing Department

Send Outs

Performing Department Laboratory Location

Sent to Quest Diagnostics- Wood Dale, IL

Methodology

Electrochemiluminescence (ECL)

CPT

83520

LOINC

Unavailable

Reviewed Date

11/1/2025

Orderable Regions