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Test Code LAB3311 Liver/Kidney Microsome Type 1 Antibodies, Serum

Reporting Name

Liver/Kidney Microsome Type 1 Ab, S

Useful For

Evaluation of patients with liver disease of unknown etiology

 

Evaluation of patients with suspected autoimmune hepatitis

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 21 days
  Frozen  21 days

Reference Values

≤20.0 Units (Negative)

20.1-24.9 Units (Equivocal)

≥25.0 Units (Positive)

Reference values apply to all ages.

Day(s) Performed

Monday, Wednesday, Friday

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86376

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LKM Liver/Kidney Microsome Type 1 Ab, S 32220-6

 

Result ID Test Result Name Result LOINC Value
LKM Liver/Kidney Microsome Type 1 Ab, S 32220-6

Cautions

Serologic tests for autoantibodies, including anti-liver/kidney microsomal antibodies type 1 (anti-LKM-1), should not be relied upon exclusively to determine the etiology or prognosis of patients with liver disease.

 

Anti-LKM-1 antibodies are not the only serological marker for autoimmune hepatitis (AIH) and should be evaluated in the context of other AIH-associated autoantibodies, including antinuclear antibodies and smooth muscle antibodies.

 

Anti-LKM-1 antibodies may occur in some patients with chronic hepatitis caused by hepatitis C virus (HCV) infection. Although the epitopes recognized by anti-LKM-1 antibodies in HCV infection are different than in patients with AIH type 2, physicians must use caution in interpreting the results of tests for anti-LKM-1 antibodies in such patients.

Report Available

2 to 4 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus OK
Heat treated Reject

NY State Approved

Yes

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Forms

If not ordering electronically, complete, print, and send 1 of the following with the specimen:

-Gastroenterology and Hepatology Test Request (T728)

-General Request (T239)

Secondary ID

80387

Testing Algorithm

For more information see First-Line Screening for Autoimmune Liver Disease Algorithm.