Leptin, Serum
Fasting Required: No

Specimen: Blood

Lab: Quest Diagnostics

Results: 8-10 business days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Description: Leptin is produced by fat cells and is involved in the regulation of appetite. It was originally thought to be a signal to lose weight but it may, instead, be a signal to the brain to regulate the amount of additional fat laid down in the body.