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Test ID MCLIP Phospholipid (Cardiolipin) Antibodies, IgM, Serum

Useful For

Evaluation of patients with suspected antiphospholipid syndrome by identification of phospholipid IgM antibodies

Method Name

Enzyme-Linked Immunosorbant Assay (ELISA)

Reporting Name

Phospholipid Ab IgM, S

Specimen Type


Specimen Required


Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.5 mL

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

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

Reference Values

<15.0 MPL (negative)

15.0-39.9 MPL (weakly positive)

40.0-79.9 MPL (positive)

≥80.0 MPL (strongly positive)


MPL refers to IgM Phospholipid Units. One MPL unit is 1 microgram of IgM antibody. 

Reference values apply to all ages.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
MCLIP Phospholipid Ab IgM, S 3182-3


Result ID Test Result Name Result LOINC Value
MCLIP Phospholipid Ab IgM, S 3182-3

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.

Report Available

1 day

NY State Approved