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HelpTest Code FACTB C3 Proactivator (Factor B)
Collection Container
Serum gel
Specimen Required
Serum
Other Acceptable Specimen Types
Red top
Specimen Volume
1 mL
Minimum Specimen Volume
0.5 mL
Special Handling Instructions
Separate serum within 2 hours.
Transport Temperature
Frozen
Specimen Stability
30 days
Methodology
Nephelometry
Reference Ranges
23-67 mg/dL
Additional Information
Also called Properdin Factor B
CPT Code
83883
LOINC Code
2269-9
Units of Measure
mg/dL