Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Rejection Criteria
Gross hemolysis Samples collected in serum separator tube
Reference Range(s)
Negative
Specimen Requirements
Preferred Specimen
Plain red top tube
Minimum Volume
1 mL serum
Sample Stability
After separation from cells: 1 week room temperature 1 week refrigerated 1 month frozen
Transport Temperature
Refrigerated
Collection Instructions
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.