Methodology
Enzyme Linked Immunosorbent Immunoassay (ELISA); Extraction
Synonyms
N-acetyl-5-methoxy-tryptamine; Sleep Hormone
Specimen Type
Serum or Plasma
Performing Lab
Quest forwards to Pan Laboratories
Epic ID
LAB07535
Lab Test Days
Wednesday
Standard TAT
2-7 Days
Collection Information
Specimen Required
2-6 mL Blood
Container Type
Lavender (EDTA)
Collection Instructions
Fasting specimen is preferred. Serum collected in a red-top tube is also acceptable. Melatonin concentration varies with light and dark cycle. The concentration is lower during the day and high at night. Patients treated with pituitary or steroid hormones influence the concentration. Hence, it should be discontinued for 2 days prior to the collection of samples.
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Room Temp=Unacceptable; Refrigerated=24 Hours; Frozen=90 Days
Test Volume Required
3 mL Serum or Plasma
Minimum Test Volume
1 mL Serum or Plasma
CPT Codes
83520
Revised
01-20-20
Initials
SL