Cefazolinneutiggserplqlfc
Key facts at a glance
- LOINC
- 73048-1
- Short code
- CEFAZOL-NAb
- Synonyms
- ceFAZolin (neut) IgG SerPl Ql FC
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST, tiger-top) or red-top clot tube; alternatively, plasma collected in EDTA (lavender-top) or sodium heparin (green-top) tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- flow-cytometry
- CPT
- 86022
- SNOMED
- 422634007
- Specimen volume
- 1-2 mL of serum or plasma (minimum 0.5 mL)
- Stability
- Serum/plasma stable for 24 hours at room temperature (15-25°C); up to 7 days at 2-8°C; for prolonged storage, freeze at -20°C or below. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 48–120 hours
- Order
- routine
Reference range
Negative: No drug-dependent neutrophil-reactive IgG antibodies detected in the presence of cefazolin. Positive results are reported when IgG binding exceeds the laboratory-defined positivity threshold relative to a negative control.N/A
No special patient preparation is required. Specimen should ideally be collected prior to the next dose of cefazolin, or at least 7-14 days after the suspected drug-induced neutropenia episode, to optimize detection of circulating drug-dependent antibodies. Document all current and recent medications, including the timing of cefazolin administration.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 15, 2026. · Read our editorial policy