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Test Code Billings Clinic: 4189 Rheumatoid Panel

Performing Laboratory

Billings Clinic Laboratory: Hematology, Chemistry, Microbiology

Methodology

See Individual test listings.

Specimen Requirements

EDTA whole blood, lithium heparin plasma, and serum are required for this test.

 

Whole Blood

  • Specimen must arrive within 24 hours of draw at refrigerated temperature or within 4 hours at ambient temperature.
  • Draw a full, lavender-top (EDTA) tube, and send 4 mL of unprocessed EDTA whole blood refrigerated.
  • Do not centrifuge.
  • Forward unprocessed whole blood promptly.

Plasma for Uric Acid

  • Draw blood in a green-top (lithium heparin) tube(s).
  • Spin down and send 1 mL of heparinized plasma frozen in plastic vial.
  • Indicate plasma on request form.
  • Label specimen appropriately (plasma for uric acid).

Serum for ANA and Rheumatoid Factor

  • Draw blood in a plain, red-top tube or a serum gel tube.
  • Spin down and send 2 mLs of serum frozen in plastic vial.
  • Indicate serum on request form.
  • Label specimen appropriately (serum for ANA and Rheumatoid Factor).

Reject Due To

Whole Blood

  • Clotted specimen
  • Frozen specimen
  • Specimen > 24 hrs old refrigerated

Serum for ANA and Rheumatoid Factor

  • Hemolyzed specimen
  • Lipemic specimen

Reference Values

See individual test listings.

Day(s) Test Set Up

ANA Screen:  Monday, Wednesday, Friday

ESR, Rheumatoid Factor, Uric Acid:  Daily

Test Classification and CPT Coding

84550 - uric acid

85651 - sedimentation rate

86038 - ANA screen
86431 - rheumatoid factor

86039 - ANA titer (if appropriate)

LOINC Code Information

Reporting Name LOINC Code
Uric Acid 3084-1
ESR 4537-7
Rheumatoid Factor 11572-5
ANA Screen 42254-3
ANA Titer (if appropriate) 5048-4

 

Profile/Testing Information

Profile Information:
Antinuclear Antibody (ANA) Screen Rheumatoid Factor
Erythrocyte Sedimentation Rate (ESR) Uric Acid
Reflex Tests (at an additional charge):
Antinuclear Antibody (ANA) Titer (if Antinuclear Antibody (ANA) Screen is positive)  

Reflex Information:

  • If Billings Clinic: #6603 “Antinuclear Antibody (ANA) Screen, Serum” is positive; Billings Clinic: #6692 “Antinuclear Antibody (ANA) Titer, Serum” will be performed unless otherwise specified in the order.
  • This test may automatically reflex to other tests. An additional fee may be added.
  • The ordering physician/provider must indicate if the reflex test is NOT DESIRED. Indicate on order if no reflex test is desired.