PM/Scl-100 Antibody, IgG by Immunoblot with Reflex to ANA IFA
Ordering Recommendation

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

Semi-Quantitative Immunoblot/Semi-Quantitative Indirect Fluorescent Antibody
1-9 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Serum separator tube.  
Specimen Preparation
Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)  
Storage/Transport Temperature
Unacceptable Conditions
Plasma. Contaminated, hemolyzed, or severely lipemic specimens.  
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year  
Reference Interval
5 Units or less: Negative
6 to 10 Units: Borderline
11 Units or greater: Positive
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.

Compliance Statement D: For laboratory tests using a manufactured RUO kit. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
If PM/Scl-100 is 11 Units or greater, then Anti-Nuclear Antibody (ANA) by IFA, IgG will be added. Additional charges apply.
CPT Code(s)
86235; if reflexed, add 86039
Component Test Code*Component Chart NameLOINC
2003041PM_Scl 100 Antibody, IgG61120-2
* 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.
  • ANA
  • Antinuclear Antibodies
  • Antinuclear Antibody
  • FANA
  • Fluorescent Antinuclear Antibodies
  • PM/Sci-100 IgG
  • PM/Scl-100
  • PM1 Antibody
  • Polymyositis