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Test Code U1RNP U1RNP Antibody

Important Note

Used as aid in the clinical diagnosis of Mixed Connective Tissue Disease (MCTD) and Systemic Lupus Erythematosus (SLE)

Additional Codes

Ordering Mnemonic
U1RNP

 

Methodology

Fluoroenzyme Immunoassay

Performing Laboratory

Holland Hospital Laboratory Services

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred Specimen-Serum

Container/Tube: Serum gel (SST) tube

Specimen Volume: 1 mL of serum

Collection Instructions:

Note: 1. Indicate serum.

2. Label specimen appropriately (serum).

 

Alternate specimens-Plasma

Container/Tube: Mint-top (lithium heparin) tube

Specimen Volume: 1 mL of plasma

Collection Instructions:

Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Container/Tube: Lavendar-top (EDTA) tube

Specimen Volume: 1 mL of plasma

Collection Instructions:

Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Container/Tube: Blue-top (sodium citrate) tube

Specimen Volume: 1 mL of plasma

Collection Instructions:

Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

 

Specimen Transport Temperature

Refrigerate

Reference Values

Negative for U1RNP  < 5 EliA U/ml

Equivocal for U1RNP  5-10 EliA U/ml

Positive for U1RNP   > 10 EliA U/ml

 

 

 

 

 

 

 

 

 

Day(s) Test Set Up

Testing performed Mondays and Thursdays.

Test Classification and CPT Coding

83520