Sulfonamides (Sulfas)
0020044
Ordering Recommendation
Submit With Order
Mnemonic
SULFA
Methodology
Quantitative Colorimetry
Performed
Tue, Fri
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Timing of specimen collection: Peak draw.  
Collect
Plain red. Also acceptable: Lavender (K2 or K3EDTA) or pink (K2EDTA).  
Specimen Preparation
Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).  
Remarks
Indicate which sulfa drug is being administered.  
Stability
After separation from cells: Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 weeks  
Reference Interval
Therapeutic Range:
5.0-15.0 mg/dL
Toxic: > 20.0 mg/dL
Interpretive Data
This test is designed to measure sulfamethoxazole and sulfisoxazole. Peak sulfonamide (total) blood levels of 5.0-15.0 mg/dL may be effective for most infections, with concentrations of 12.0-15.0 mg/dL being optimal for serious infections. Sulfonamide levels should not exceed 20.0 mg/dL. Adverse effects may include blood dyscrasias, skin rash, nausea, vomiting and fever.
Note
CPT Code(s)
80299
Components
Component Test Code*Component Chart Name
0020044Sulfonamides (Sulfas)
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Adiazine
  • AzoGantanol
  • Bactrim
  • Cotrimazine
  • Eskadiazine
  • Gantanol
  • Gantrim
  • Microsulfon
  • Nu-Cotrimox
  • Pediazole
  • Septra
  • SIS-Sulfisoxazole
  • SMX - Sulfamethoxazole
  • Sulfa Drugs
  • Sulfadiazine
  • Sulfamethoxazole
  • Sulfapyrimidine
  • Trimethoprim
  • Triple Sulfa