Ulta Lab Tests LogoContact Us

Tag: CRP

September 22, 2026

Seronegative Rheumatoid Arthritis: Can You Have RA With Negative RF and Anti-CCP?

Why negative antibody tests do not end an evaluation when swollen joints and other findings suggest inflammatory arthritis.

Yes, rheumatoid arthritis can occur with negative rheumatoid factor (RF) and anti-CCP antibody results. Clinicians use the term seronegative RA when the characteristic antibodies are not detected but the overall findings support the diagnosis. Negative […]

Read More
September 22, 2026

Rheumatoid Arthritis and Persistent Fatigue: When CBC, Iron, B12, and Thyroid Tests Matter

How clinicians use blood counts, iron studies, vitamin B12, and selected thyroid tests to investigate fatigue that persists despite RA treatment.

Persistent fatigue in rheumatoid arthritis deserves its own evaluation. Inflammation may contribute, but anemia, iron deficiency, thyroid disease, sleep problems, medication effects, and other conditions can overlap. The most useful blood tests are the ones […]

Read More
Copyright © 2013-2026 Ulta Lab Tests, LLC All Rights Reserved.