Table 1.

Serologies and Their Implications in Workup of Lung Fibrosis

Lab TestImplications When Elevated
Anti-nuclear antibodyCollagen vascular diseases
Rheumatoid factorRheumatoid arthritis
Anti-Scl-70 antibodySystemic scleroderma
Anti-centromere antibodyLimited cutaneous scleroderma
Anti-synthetase antibodyDermatomyositis
Polymyositis
Anti-synthetase syndrome
Anti-Ro (SS-A) antibodySjögren syndrome
Lupus erythematosus
Anti-La (SS-B) antibodySjögren syndrome
Lupus erythematosus
AntiribonucleoproteinMixed connective-tissue disease LUPUS erythematosus
AldolaseDermatomyositis
Polymyositis
Creatine kinaseDermatomyositis
Polymyositis
Erythrocyte sedimentation rateCollagen vascular diseases
Anti-cyclic citrullinated peptideRheumatoid arthritis