Tetrahydrozoline, Serum/Plasma Test (4350SP)
| Analysis Code |
4350SP |
| Test Name |
Tetrahydrozoline, Serum/Plasma |
| Test Includes |
Tetrahydrozoline [LC-MS/MS] |
| Compound Synonym(s) |
Murine Tears Plus®
Tetryzoline
Tyzine®
Visine® |
| Purpose |
Forensic Analysis |
| Category |
Occular Vasoconstrictor |
| Method(s) |
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS) |
| Specimen Requirements |
2 mL Serum or Plasma |
| Transport Temperature |
Refrigerated |
| Specimen Container |
Plastic container (preservative-free) |
| Special Handling |
Serum: Collect sample in Red top tube
Plasma: Collect sample in Lavender top tube (EDTA) or Pink top tube.
Promptly centrifuge and separate Serum or Plasma into a plastic screw capped vial using approved guidelines. |
| Light Protection Required |
Not Required |
| Stability |
Room Temperature: 30 day(s)
Refrigerated: 30 day(s)
Frozen (-20 °C): 30 day(s) |
| Rejection Criteria |
Polymer gel separation tube (SST or PST). |
| Day(s) Test Set-up |
[LC-MS/MS] Tuesday 2nd Shift 3 days |
| Suggested CPT Code |
[LC-MS/MS] 83789 |
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