Ordering Recommendation

May be useful when evaluating for systemic sclerosis or connective tissue disease associated with overlapping features of systemic sclerosis and/or myositis.

Mnemonic
PM/SCL
Methodology

Qualitative Immunoblot

Performed

Tue, Thu, Sat

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Serum separator tube.

Specimen Preparation

Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Plasma. Contaminated, hemolyzed, or severely lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval

Negative

Interpretive Data

The presence of PM/Scl-100 IgG antibody along with a positive ANA IFA nucleolar pattern is associated with connective tissue diseases such as polymyositis (PM), dermatomyositis (DM), systemic sclerosis (SSc), and polymyositis/systemic sclerosis overlap syndrome. The clinical relevance of PM/Scl-100 IgG antibody with a negative ANA IFA nucleolar pattern is unknown. PM/Scl-100 is the main target epitope of the PM/Scl complex, although antibodies to other targets not detected by this assay may occur.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note
Hotline History
N/A
CPT Codes

86235

Components
Component Test Code* Component Chart Name LOINC
2003041 PM/Scl 100 Antibody, IgG 81732-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • ANA
  • Antinuclear Antibodies
  • Antinuclear Antibody
  • FANA
  • Fluorescent Antinuclear Antibodies
  • PM/Sci-100 IgG
  • PM/Scl-100
  • PM1 Antibody
  • Polymyositis
PM/Scl-100 Antibody, IgG by Immunoblot