SST tube
0.5 mL serum
0.5 mL serum
Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Collect specimen in SST tube. Centrifuge and refrigerate.
Monday - Friday
8 hours
Enzyme Immunoassay
0 - 19 CU
Diagnosis of rheumatoid arthritis (RA), differential diagnosis of rheumatoid factor-positive disorders potentially confused with RA, confirming a diagnosis of RA in seronegative polyarthritis, and diagnosis of RA in early synovitis patients.
Positive results my occur in some patients with lupus erythematosus or other autoimmune connective tissue diseases.
32218-0
86200
20560
Red top tube
Specimen collected in citrated plasma or EDTA plasma.