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Test Code
SULFA
Test Name
Sulfamethoxazole
CPT Codes
80299
Expected Turnaround Time
2 - 5 days
Clinical Utility

Monitoring sulfamethoxazole therapy to ensure drug absorption, clearance, or compliance.
Specimen and Container Info

Specimen Type: Serum

  

Collection Container:  Red Top, Plain


Desired Specimen Volume:  1 mL
Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within 2 hours of collection.
  2. Transfer 1 mL of serum to a clear aliquot tube (screw cap).
Patient Preparation

Serum for a peak level should be collected 60 minutes after dose.
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

28 days

Refrigerated

28 days

Frozen

28 days
Methodology
Liquid Chromatography - Tandem Mass Spectrometry (Lc/Ms/Ms)
Reference Intervals

See patient report.
Limitations

Specimens collected in serum gel tubes are not acceptable, as the drug can absorb on the gel and lead to falsely decreased concentrations.
Reference Lab
Mayo Clinic Laboratories
Testing Schedule
Routine, 2 times per week
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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