Antibody titers for mycelial and yeast antigens of Histoplasma
2 - 4 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
0.25 mL (Note: This volume does not allow for repeat testing.)
Red-top tube or gel-barrier tube
Hemolysis; lipemia; gross bacterial contamination
Immunodiffusion test is used to detect antibodies to Histoplasma capsulatum. The antigen used is a culture filtrate. Histoplasmin H and M preciptins can be identified by the assay. The M band often appears first and may occur without the H band. M preciptin is found in about 70% of both acute and chronic histoplasmosis cases. Both M and H occur together in only about 10% of patients. Results should be interpreted in the context of clinical presentation and other laboratory findings (e.g., fungal culture).
Negative fungal serology does not rule out the possibility of current infection.
Double immunodiffusion (DID)
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|164319||Histoplasma Abs, Qn, DID||27266-6||164320||Histoplasma Abs, Qn, DID||27266-6|
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