Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Rejection Criteria
Samples collected in serum separator tube Hemolysis Gross lipemia Icterus
Reference Range(s)
Therapeutic: 2-12 UG/ML
Specimen Requirements
Preferred Specimen
Plain Red Top Tube
Minimum Volume
0.5 mL Serum
Sample Stability
2 days room temperature 1 week refrigerated 2 weeks 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.