Antinuclear antibody : This Arthritis Laboratory Testing checks blood levels of antibodies that are often present in people who have connective tissue diseases or other autoimmune disorders, such as lupus.
There are also Arthritis Laboratory Testing for individual types of ANA’s that may be more specific to people with certain autoimmune disorders.
Arthrocentesis : Arthrocentesis or joint aspiration is done to obtain a sample of synovial fluid.
The doctor injects a local anesthetic, inserts a thin, hollow needle into the joint, and removes the synovial fluid into a syringe.
Complement : This Arthritis Laboratory Testing measures the level of complement, a group of proteins in the blood.
A low blood level of complement is common in people who have active lupus.
Creatinine : This blood test is commonly ordered in patients who have rheumatic diseases to monitor for underlying kidney disease.
Erythrocyte Sedimentation Rate : This blood test is used to detect inflammation in the body.
Hematocrit : This test and the test for hemoglobin measure the number of red blood cells present in a sample of blood.
A decrease in the number of red blood cells (anemia) is common in people with inflammatory arthritis and rheumatic diseases.
Rheumatoid Factor : This Arthritis Laboratory Testing determines whether rheumatoid factor is present in the blood.
Urinalysis: In this Arthritis Laboratory Testing, a urine sample is studied for protein, red blood cells, white blood cells, or casts.
White Blood Cell Count : This Arthritis Laboratory Testing determines the number of white blood cells present in a sample of blood.
Complete Blood Count : This Arthritis Laboratory Testing determines the number of white blood cells, red blood cells, and platelets present in a sample of blood.
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