Sm/RNP Antibody

CPT Code: 86235
Order Code: 38567
Alternative Names: Ribonucleoprotein, ENA Antibodies, Ribonuclear Protein Antibody, RNP Antibody, Extractable Nuclear Ab, Smith Antibodies
ABN Requirement: No
Specimen: Serum
Volume:  1.0 mL
Minimum Volume:  0.5 mL
Container: Gel-barrier tube (SST, Tiger Top)

Collection:

  1. Collect and label sample according to standard protocols.
  2. Gently invert tube 5 times immediately after draw. DO NOT SHAKE.
  3. Allow blood to clot 30 minutes.
  4. Centrifuge for 10 minutes.

Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions included with the provided shipping box.

Stability:

Ambient (15-25°C): 4 days
Refrigerated (2-8°C): 7 days
Frozen (-20°C): 30 days

Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits; gross hemolysis; gross lipemia; gross icterus

Methodology: Immunoassay (IA)

Turn Around Time:  2 to 3 days

Reference Range:

<1.0 AI Negative

Clinical Significance: Smith (Sm)/U1-RNP Antibody is detected in patients with mixed connective tissue disease (having features of systemic lupus erythematosus (SLE), scleroderma, and polymyositis).

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.