Test Overview
Test Methodology

Indirect Fluorescent Antibody (IFA), Mouse stomach kidney substrate

Test Usage

Useful in providing confirmatory evidence in the diagnosis of primary biliary cirrhosis.

Reference Range *

Negative

Test Limitations

Level of antibody does not correlate with severity or duration of disease. Low, transient titers are sometimes seen with chlorpromazine or halothane sensitivity.

Test Details
Days Set Up
Tuesday, Friday
Analytic Time

8 hours

Soft Order Code
MITO
MiChart Code
Antimitochondrial Antibody
Synonyms
  • AMA
  • Antimitochondrial Antibody
  • Liver Mitochondrial Antibody
  • Mito
  • Mito Ab
  • Mitochondrial Antibody
Laboratory
Chemical Pathology
Section
Immunopathology
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Specimen should be frozen if it's not going to be received in Immunology within 3 days of collection.

Alternate Specimen
Red top tube.
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.2 mL serum
Additional Information

A positive test for Mitochondrial antibody in the presence of increased alkaline phospatase activity, elevated cholesterol, and elevated IgM concentrations, strongly supports the diagnosis of primary biliary cirrhosis (PBC). The liver mitochondrial antibody is generally absent in drug-induced cholestatic jaundice, viral hepatitis, sclerosing cholangitis, alcoholic and other forms of cirrhosis, hepatic malignancy, and other autoimmune diseases. Low titer antibody may be found in other autoallergic hepatic disorders, such as chronic active hepatitis and cryptogenic cirrhosis. If another antibody including Parietal Cell Antibody, Liver Kidney Microsomal Antibody, or Smooth Muscle Antibody, is noted to be present during the performance of this test, the client will be notified via a footnote in the report. Please contact the MLabs Client Services Center to request the additional auto-antibody; there will be a separate charge for each auto-antibody test ordered.

Billing
CPT Code
86256
Fee Code
21929
LOINC
5247-2
NY State Approved
No