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Test ID: FMYOP    
Myositis Ab 2 Panel

Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

1.  Anti-Jo 1 Abs are found in subset of myositis patients

     characterized by interstitial lung disease, systemic

     polyarthritis, Raynaud’s Phenomena, fever and Mechanic’s

     Hand (anti-synthetase syndrome).

2.  Anti-Jo 1 appears to be a marker for interstitial lung disease

     in polymyositis.


Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

Anti-Jo-1 Ab:


Reference Range:  Negative


Negative                         <20 units

Weak Positive               20-39 units

Moderate Positive         40-80 units

Strong Positive               >80 units


 MI-2, PL-7, PL-12, EJ, OJ, SRP, KU, PM/SCL, U2 SN RNP:


Reference Range:  Negative


Test Performed By:  RDL Reference Laboratory, Inc.

                              10755 Venice Boulevard

                               Los Angeles, CA  90034