False Positive Immunological Assays Caused by HAMA, HARA or HAGA

Are you evaluating a patient with a possible false positive result for a test utilizing an animal antibody?

Yes

Animal source for antibody reagent

Does repeat testing after absorption or blocking of patient antibody gives a significantly different result?

Yes

Does repeat testing using an antibody from a different species gives a significantly different result?

Yes

Does the patient have IgM or IgG antibodies to the suspected species?

Yes

Does the patient have a history of exposure to the suspected species (pet, occupation, immune therapy)?

Yes

Results

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Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Number of findings suggesting a human anti-animal antibody interference

Should an anti-animal antibody be suspected as a source of test interference?

Term used if an anti-animal antibody is present

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Laboratory Tests
Other Testing
- Falsely Elevated Blood Glucose Caused By Maltose with Glucometer Using Glucose Test Strips
- Impact of Color Blindness on Accuracy of Dipstick or Other Tests Involving Color Change
Complications
- Artifactual Elevation of the Serum Total Bilirubin in a Patient with a Paraprotein

Monitoring

Compliance/adherence
- Discrepancy Between Serum Level and Physiologic Marker in Noncompliant Patient

Evaluation

Results

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MedicalAlgorithms.com APIs

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Monitoring

Specialty

Objective

ICD-10

False Positive Immunological Assay Caused by Human Anti-Animal Antibodies (HAMA, HARA or HAGA)

Purpose: To evaluate a patient for anti-animal antibodies that are causing a false positive test result.

Evaluation

Results

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MedicalAlgorithms.com APIs

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Monitoring

Specialty

Objective

ICD-10