Back pain laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Zehra Malik, M.B.B.S[2]

Overview

There are no diagnostic laboratory findings associated with back pain. However, to investigate the underlying cause of back pain it is crucial to look for the following, complete blood count (CBC), erythrocyte sedimentation rate, C-reactive protein, HLA-B27, antinuclear antibody (ANA), rheumatoid factor, lactate dehydrogenase (LDH), uric acid.

Laboratory Findings

There are no diagnostic laboratory findings associated with back pain. However, to investigate the underlying cause of back pain it is crucial to test for the following:

Laboratory Test	Pathology Suspected
Complete blood count (CBC)	Infections, inflammation
Erythrocyte sedimentation rate	Infection, inflammation, arthritis
C-reactive protein	Inflammation, arthritis
HLA-B27	Ankylosing spondylitis, reactive arthritis
Antinuclear antibody (ANA)	Inflammatory, autoimmune
Rheumatoid factor	Rheumatoid arthritis
Lactate dehydrogenase (LDH)	Rapid marrow turnover
Uric acid	Rapid marrow turnover