Sign in →

Test Code BLOD1381 RNP (U1RNP) Antibodies, IgG

Methodology

Enzyme-linked fluorescent immunoasay (EliA)

 

Useful for evaluating patients with signs and symptoms of a connective tissue disease in whom the test for antinuclear antibodies is positive. RNP antibodies typically appear in both SLE and mixed connective tissue disease (MCTD, Sharp Syndrome).

Performing Laboratory

Bozeman Outpatient Services at North 19th

Specimen Requirements

Specimen Type: Serum
Container/Tube: Gold top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL

Specimen Rejection: 

​1.  Grossly hemolyzed or lipemic samples will be rejected. 

2.  Repeatedly freezing and thawing samples can cause analyte deterioration. Thaw only once.

Specimen Transport Temperature

Ambient <8 hours/Refrigerated <48 hours/Frozen >48 hours

Specimen Stability

 

Specimen Type Temperature Time
Serum Ambient 8 hours
  Refrigerated 48 hours
  Frozen 30 days

 

Reference Values

Negative

 

<5.0 U/mL (negative)

5.0-10.0 U/mL (equivocal)

>10.0 U/mL (positive)

Day(s) Test Set Up

Monday, Wednesday, Friday

 

Turnaround Time: Same day as performed

Test Classification and CPT Coding

86235