Red-top tube, gel-barrier tube OR lavender-top (EDTA) tube
Volume
1 mL
Minimum Volume
0.5 mL (NOTE:This volume does NOT allow for repeat testing.)
Specimen Handling
If tube other than gel-barrier tube is used, transfer separated serum or plasma to a plastic transport tube. Include patient's age on the test request form.
Temperature
Refrigerate
Methodology
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Stability
Room Temperature: 7 days Refrigerated: 7 days Frozen: 14 days
