ARUP's Laboratory Test Directory
| 0050174: Histoplasma Antibody by ID |
| Test Mnemonic: HISTO PPT | |
|
Methodology: Immunodiffusion
Performed: Sun-Fri Reported: 2-4 days |
| Specimen Required: | |
|
Collect: One 4 mL SST.
Transport: 0.5 mL serum at 2-8°C. (Min: 0.25 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.1 mL serum at 2-8°C. Remarks: Separate serum from cells ASAP. Unacceptable Conditions: Body fluids. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
|
| Reference Interval: |
| None detected. |
| Interpretive Data: | |
|
The immunodiffusion test can detect precipitins to specific Histoplasma protein antigens (M and H). The M band often appears first and may occur without the H band. M precipitin is found in about 70 percent of both acute and chronic histoplasmosis cases. Both M and H occur together in only about 10 percent of patients.
|
| Note: | |
| Negative fungal serology does not rule out the possibility of current infection. |
| CPT Code(s): | |
| 86698 |