Sulfonamides (Sulfas) Drug Level
Label Mnemonic: SULFA
Epic Lab Code: LAB4112
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
Specimen Instructions:
Patient Preparation: Draw peak specimen two hours post dose. Separate serum from cells as soon as possible.
Collection Medium:
Red top tube 5 mL (Clot Activator)
Preferred Minimum: 1.0 mL serum
Absolute Minimum: 0.5 mL serum
Rejection Criteria:
Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).
Delivery Instructions:
Submit specimen to laboratory as soon as possible after collection.
Turn Around Time:
5 days upon receipt at reference laboratory
Reference Range:
Therapeutic: 5.0-15.0 mg/dL Toxic: >20.0 mg/dL This test is designed to mesure sulfamethoxazole and sulfisoxazole. Peak sulfonamide (total) blood levels of 5-15 mg/dL may be effective for most infections, with concentrations of 12-15 mg/dL being optimal for serious infections. Sulfonamide levels should not exceed 20 mg/dL.
Indicate which sulfa drug is being administered.
Quantitative Colorimetric
CPT Code: