Melatonin
0098816
Ordering Recommendation
Submit With Order
Mnemonic
MELATONIN
Methodology
Quantitative Radioimmunoassay
Performed
Wed
Reported
2-10 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Plain red. Also acceptable: Lavender (EDTA) or pink (K2EDTA).  
Specimen Preparation
Allow plain red tube to sit for 15-20 min at room temperature for proper clot formation. Centrifuge and separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 2 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
Serum separator tube (SST). Hemolyzed or lipemic specimens.  
Remarks
Melatonin concentrations depend on age and on circadian rhythm, with maximum concentration at night between 1:00-3:00 a.m.  
Stability
Ambient: 24 hours; Refrigerated: 48 hours; Frozen: 3 months  
Reference Interval
By report
Interpretive Data


See Compliance Statement D: www.aruplab.com/CS
Note
CPT Code(s)
83519
Components
Component Test Code*Component Chart Name
0098816Melatonin
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • N-acetyl-5-methoxytryptamine