Ordering Recommendation

Aids in the diagnosis of histoplasmosis. Not recommended as a standalone test. For more complete serologic testing, refer to Histoplasma Antibodies by Complement Fixation and Immunodiffusion (0050627).

Methodology

Immunodiffusion

Performed

Sun-Sat

Reported

3-6 days

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min 0.15 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval

Not Detected

Interpretive Data

Refer to report.

Compliance Category

FDA

Note

This immunodiffusion test detects total antibodies against the H and M antigens of Histoplasma capsulatum.

Hotline History

N/A

CPT Codes

86698

Components

Component Test Code* Component Chart Name LOINC
0050174 Histoplasma Antibodies by ID 5218-3
* 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

  • H antigen
  • Histoplasma capsulatum
  • Histoplasmosis
  • M antigen
  • Precipitin
Histoplasma Antibodies by Immunodiffusion