ARUP's Laboratory Test Directory

Phosphatidylcholine Antibodies, IgG, IgM & IgA : 0051590

Mnemonic: PHOSCHOPAN

Ordering Recommendation: Not a recommended panel for the definitive diagnosis of antiphospholipid syndrome (APS).
Methodology: Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed: Thu
Reported: 1-8 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Plasma or other body fluids. Contaminated, heat-inactivated, hemolyzed, or icteric specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
Test Number Components Reference Interval
Phosphatidylcholine Antibody, IgA 0-11 U/mL: Normal
12-18 U/mL: Equivocal. Suggest repeat testing in 4-6 weeks or consider antibody testing for cardiolipin IgG and IgM, beta-2 glycoprotein 1 IgG and IgM and lupus anticoagulant.
19 U/mL or greater: Positive
Phosphatidylcholine Antibody, IgG 0-11 U/mL: Normal
12-18 U/mL: Equivocal. Suggest repeat testing in 4-6 weeks or consider antibody testing for cardiolipin IgG and IgM, beta-2 glycoprotein 1 IgG and IgM and lupus anticoagulant.
19 U/mL or greater: Positive
Phosphatidylcholine Antibody, IgM 0-11 U/mL: Normal
12-18 U/mL: Equivocal. Suggest repeat testing in 4-6 weeks or consider antibody testing for cardiolipin IgG and IgM, beta-2 glycoprotein 1 IgG and IgM and lupus anticoagulant.
19 U/mL or greater: Positive

Interpretive Data:

See Compliance Statement D: www.aruplab.com/CS
CPT Code(s): 83520 x3
Cross References: aPC Antibodies (Phosphatidylcholine Antibodies, IgG, IgM & IgA)