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St. John Health System
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Arthritis Group

Order Name ARTH GRP
Test Number: 2931500
Revision Date 05/03/2018
Test Name Methodology LOINC Code
Erythrocyte Sedimentation Rate (ESR) (Sed Rate)
Westergren 82477-1 (4537-7) 
Uric Acid
Uricase 3084-1 
Anti-Nuclear Antibody Screen (ANA) with Reflex to Titer
Indirect Fluorescent Antibody 8061-4 
RA Factor (Rheumatoid Factor)
Immunoturbidimetry  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred See Instructions See Instructions See Instructions See Instructions
Instructions Erythrocyte Sedimentation Rate: 4 mL (1.5mL)  Whole Blood  EDTA (Lavender Top) Room Temperature 
Specimen must be tested within the first 24 hours of collection.
EDTA Microtainers (bullets) are not acceptable specimens.
Uric Acid: 1 mL (0.5)  Plasma  Lithium Heparin PST (Light Green Top) or 1 mL (0.5)  Serum  Clot Activator SST Refrigerated
Stability: Ambient 8 hours. Refrigerated 7 days.
Antinuclear Antibody Screen: 1 mL  Serum  Clot Activator SST Refrigerated
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Stability After separation from cells: Ambient 8 hours, Refrigerated 7 days, Frozen 3 months (avoid repeated freeze/thaw cycles).
Rheumatoid Factor Quantitative: 1 mL  Serum  Clot Activator SST Refrigerated
 
GENERAL INFORMATION
Testing Schedule Varies 
Expected TAT Assay Dependant 
CPT Code(s) 85652, 84550, 86038 (if reflex to titer 86039), 86431
Internal Comments 5/3/18 - we dont usually put special caresets on our website - ticket 624732 [(SARAH BECKER) -- 05/03/18 08:00:00 AM] Arthritis Grp needs to be added to RML Test Directory. Test code 2931500. Thanks, SBecker
Service Provided By Labcorp Oklahoma, Inc.
Lab Section See Individual Assays