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Test Code MELATN Melatonin, Plasma

Specimen Required

Specimen Type: Plasma


Preferred: (Lavender top) EDTA

Acceptable: (pink top) EDTA

Specimen volume: 3 mL

Collection instructions: Draw blood in EDTA (lavender top) tube(s). Spin down and send 1 mL of plasma refrigerated in a plastic vial.

Secondary ID


Method Name

High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

Reporting Name

Melatonin, Plasma

Specimen Type

Plasma EDTA

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma EDTA Refrigerated (preferred) 30 days
  Frozen  365 days
  Ambient  14 days

Reject Due To

Hemolysis Mild reject; Gross reject
Lipemia Mild reject; Gross reject
Icterus NA
Other Polymer gel separation tube (SST or PST)

Reference Values

Reporting limit determined each analysis.


Units: ng/mL

Day(s) and Time(s) Performed



Performing Laboratory

NMS Labs

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FMELA Melatonin, Plasma 11055-1


Result ID Test Result Name Result LOINC Value
Z3521 Melatonin 11055-1

Test Classification

This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the U.S. Food and Drug Administration.