Thiopurine Metabolites by LC-MS/MS

Specimen:

Collect

  • One Lavender (EDTA)

Also Acceptable:
  • One Pink Top (EDTA)

Submit

  • 4 mL (Min:3 mL) Whole blood in Lavender (EDTA). Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable:
  • 4 mL (Min:3 mL) Whole blood in Pink Top (EDTA). Submit Refrigerated. Submit in a Standard Transport Tube.

Special Handling

  • Trough collection (within 1 hour prior to the next dose).

Rejection Criteria

  • Frozen whole blood
  • Hemolyzed specimens
  • Lipemic Samples
  • Use of separator tubes

Stability

Ambient: 1 Day(s); Refrigerated: 7 Day(s); Frozen: Unacceptable; Incubated: Unacceptable

Methodology

  • Quantitative Liquid Chromatography-Tendem Mass Spectrometry

Performed

Tuesday, Thursday, Saturday

Reported

2-6 Day(s)

CPT Codes

  • 80299

Interpretive Data

Please see report for interpretive data.

Components

  • 92084 - 6-THIOGUANINE
  • 92085 - 6-MMP
Last Updated: January 25, 2025 @ 10:13 am

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