RNP (U1) (Ribonucleic Protein) (ENA) Antibody, IgG
Abbrev Code: | RNPIGG | ||
Order Code: | LAB6336 | Order Name: | RNP Antibody IgG |
Synonyms: | ENA (RNP) Antibody; Extractable Nuclear Antigen Antibody; Ribonucleic Protein (ENA) Antibody; Anti-RNP (ENA) Antibody | ||
Methodology: | Fluorescent enzyme immunoassay | ||
CPT Codes: | 86235 x1 | ||
Test Includes: | RNPA and RNP68 | ||
Turnaround Time: | Performed Mon-Fri; results reported the same day. |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 2 mL |
Minimum\Peds Volume: | 0.9 mL |
Container: | Red or gold (gel) Alternate Containers: Green (lithium heparin, gel), Purple (EDTA), Red (no gel) |
Causes for Rejection: | Severely lipemic or hemolyzed specimens. |
Processing and Shipping
Specimen Processing: | Centrifuge ASAP and aliquot 1 mL, 0.35 mL minimum. Store in refrigerator up to 14 days. |
Shipping Instructions: | Ship at refrigerated temperature. |
Test Performed at or Referral Lab | UM Specialty Core/Prot/Endo (Phadia ELiA G) |
Interpretive
Reference Range: |
|
||||
Use: | RNP antibody is seen in 95-100% of mixed connective tissue disease and is considered specific for this syndrome if other antibodies are negative; RNP is also present in 20-30% of SLE and 15-25% of progressive system sclerosis. RNP antigens also contain epitopes which are immunologically identical to free Smith antigens. The Smith antibody response must be considered when interpreting RNP results. |
Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
systemlabguide@fairview.org for TestID: 3226"