Ordering Recommendation

Aid in the diagnosis of histoplasmosis. Recommend testing in conjunction with Histoplasma Antibodies by CF & ID (0050627) and Histoplasma Galactomannan Antigen Quantitative by EIA, Urine (2009418).

Mnemonic
HISTOAG S
Methodology

Quantitative Enzyme Immunoassay

Performed

Mon, Wed, Fri

Reported

1-4 days

New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.
Specimen Required
Patient Preparation
Collect

Plain Red or Serum Separator Tube (SST).

Specimen Preparation

Transfer 2 mL serum to a sterile ARUP Standard Transport Tube (ARUP Supply #43115). (Min: 1 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Specimen types other than those listed.

Remarks
Stability

Ambient: Unacceptable; Refrigerated: 2 weeks; Frozen: 1 month (avoid repeated freeze/thaw cycles)

Reference Interval

Not Detected

Interpretive Data

The quantitative range of this assay is 0.19-60.0 ng/mL. Antigen concentrations less than 0.19ng/mL or  greater than 60.0 ng/mL fall outside the linear range of the assay and cannot be accurately quantified.

This EIA test should be used in conjunction with other diagnostic procedures, including microbiological culture, histological examination of biopsy samples, serology and/or radiographic evidence, to aid in the diagnosis of histoplasmosis.

Crossreactivity with Blastomyces dermatiditis, Coccidioides immitis, and possibly Talaromyces marneffei have been observed with this EIA. Other clinically and geographically relevant endemic mycoses should be considered in the case of a positive test result.

Test developed and characteristics determined by ARUP Laboratories. See Compliance Statement B: aruplab.com/CS

Compliance Category

Laboratory Developed Test (LDT)

Note

For urine, refer to test Histoplasma Galactomannan Antigen Quantitative by EIA, Urine (ARUP test code 2009418).

Hotline History
N/A
CPT Codes

87385

Components
Component Test Code* Component Chart Name LOINC
0060749 Histoplasma Antigen, Serum 6428-7
0092523 Histoplasma Antigen, Serum Interp 44525-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Histoplasma antigen immunoassay
  • serum histoplasma
Histoplasma Antigen Quantitative by EIA, Serum