Histoplasma Antigen
Label Mnemonic: HSTBL
Epic Lab Code: LAB7428
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
1.2 mL serum
Rejection Criteria:
Interfering substance: sputolysin and sodium hydroxide.
Turn Around Time:
1 week upon receipt at reference laboratory
Reference Range:
None Detected

Positive Below the Limit of Quantification: Results above the cutoff for positivity, but below 0.4 ng/mL fall outside the linear range of the assay. These results are positive, but not accurately quantifiable.

Positive: 0.4-19.0 ng/mL

Positive Above the Limit of Quantification: Results greater than 19.0 ng/mL fall outside the linear range of the assay. These results are positive, but not accurately quantifiable.
Interpretive Data:
Cross-Reactions:
Occur in blastomycosis, paracoccidioidomycosis and penicilliosis, less frequently in coccidioimycosis, rearely in aspergillosis and possibly sporotrichosis.
Comments:
Please print, complete, and submit the MiraVista Diagnostics Medical Test Requisition with the specimen and A-1a Miscellaneous Request or Epic Req.

Guidelines for Use
As an aid in rapid diagnosis of histoplasmosis. Monitoring the histoplasmosis helps determine when treatment can be stopped and to diagnose relapse.
Methodology:
Sandwich Enzyme Immunoassay (EIA) using polyclonal antibodies to Histoplasma capsulatum
CPT Code:
87385