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Test Name:
Blastomyces Antibody, by Complement Fixation
- SBMF No:
44141 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
BLASTO- - ABN:
Not required - CPT Code:
86612 - LOINC Code:
5057-5 - Ref Lab Test No:
0050130 - Also See:
44206 Fungal Antibodies, by Complement Fixation, Serum - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
1.0 mL - Min Vol:
0.15 mL - Fasting:
No - Spec Collect:
Routine venipuncture
Parallel testing is preferred
Label samples as: "acute" or "convalescent"
Convalescent samples must be received within 30 days from receipt of acute samples - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
After separation from cells:
2 days room temperature (20-30°C)
2 weeks refrigerated (2-8°C)
1 year frozen (-20°C) – Do not use frost free units that undergo repeated freeze/thaw cycles - Spec Reject:
Severely lipemic or contaminated sample - Methodology:
Complement Fixation (CF) - Clinical Significance:
Refer to:
- Reference Range:
- Blastomyces Antibody by CF
- < 1:8
- Interpretive Data:
- Less than 40% of patients have positive tests when active disease is present. Frequent cross-reactions occur in patients with histoplasmosis or coccidioidomycosis. Paired sera may detect rise in titer to single antigen.
- Note:
- Negative fungal serology does not rule out the possibility of current infection.
- Day Run:
Sun-Fri - Time Reported:
3-5 days - Test Type:
INFECTIOUS ANTIBODY
