Morphine, Serum

Test Code: TD_5292
CPT Code(s): 80361

$79

Test Details

Alternative Name(s)

Morphine, unconjugated

Test Includes

Morphine, Serum

Methodology

Liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Rejection Criteria

Hemolysis
Gross lipemia
Icterus
Samples collected in serum separator tube

Reference Range(s)

<5 NG/ML

Specimen Requirements

Preferred Specimen

Plain red top tube

Minimum Volume

0.5 mL serum

Sample Stability

After separation from cells:
2 days room temperature
2 weeks refrigerated
2 weeks frozen

Transport Temperature

Refrigerated

Collection Instructions

1 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Refrigerate.

Alternative Specimen

1 mL EDTA (lavender top), heparin (green top) or sodium fluoride (gray top) plasma. Centrifuge sample and separate plasma from cells immediately. Transfer plasma to a plastic transport tube. Clearly label tube as EDTA or heparin plasma. Refrigerate.