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Rheumatoid Factor

Alias:

RA (Rheumatoid Arthritis) Factor , RF (Rheumatoid Factor) , Rheumatoid Arthritis , Latex RA

Methodology:

Immunoturbidimetric

Performed:

Monday-Friday 8:00a to 10:00p
Saturday-Sunday 9:00a to 5:00p

Analytical Time:

1 day

Testing Laboratory:

Pathology Laboratory

Laboratory Section:

Core Laboratory

Rheumatoid Factor

Preferred Collection Container:

Light Green (Lithium Heparin Plasma Separator Tube)
SST (Serum Separator)

Also Acceptable Collection Container:

Green No Gel (Lithium Heparin)
Red (No Additive)

Collection Information:

Collect blood in a Light Green (Lithium Heparin Plasma Separator Tube) or SST (Serum Separator). Green No Gel (Lithium Heparin) or Red (No Additive) are also acceptable.

Transport Information:

Centrifuge and aliquot 0.6 mL of plasma or serum into a plastic transport vial. Send refrigerated.

Minimum Sample Volume: Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or reflex testing. In some situations, a minimum specimen volume may result in a QNS (Quantity Not Sufficient) result, requiring a second specimen to be collected.

Minimum amount of analytical sample (serum, plasma, urine, CSF, etc.) required to perform an assay once. Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory or reflex testing. In some situations, a minimum specimen volume may result in a QNS (Quantity Not Sufficient) result, requiring a second specimen to be collected.

0.2 mL plasma or serum (approximately 0.4 mL of whole blood based upon a normal patient hematocrit)

Remarks:

Remove serum/plasma from cells ASAP. EDTA plasma is acceptable but will not route in Sunquest information system.

Unacceptable Conditions:

Gross lipemia

Stability Comments:

Avoid freeze/thaw cycles.

Stability

Refrigerated Stability:

8 days

Frozen Stability:

3 months- thawed only once

Ambient Stability:

24 hours

Rheumatoid Factor

Sunquest Order Code:

RHUF

Epic Number: The test code used to identify this assay in Epic

LAB206

CPT Code:

86431

Rheumatoid Factor

Modified:

10/4/2011 12:06:09 PM