14.3.3 eta Protein, Serum




Test Mnemonic

1433P

CPT Codes

  • 83520 - QTY (1)

LOINC ®

75880-5

Includes

  • 14.3.3 ETA, Rheum. Arthritis

Performing Laboratory

LabCorp


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumNo additive (Red) FrozenAllow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 45 minutes of collection. Transfer serum to standard aliquot tube.

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold) FrozenAllow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 45 minutes of collection. Transfer serum to standard aliquot tube.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL     

Stability

Environmental Condition Description
Refrigerated3 days
Ambient3 days
Frozen7 days (stable 6 freeze/thaw cycles)

Days Performed

Varies

Turnaround Time

7 - 13 days

Methodology

Name Description
Enzyme-Linked Immunosorbent Assay (ELISA) 

Reference Range

14.3.3 eta PROTEIN
Sex Age From Age To Type Range Range Unit
       Normal<0.2ng/mL

Special Info

Hemolyzed or lipemic specimens will be rejected.

Clinical Info

14-3-3 eta protein is a joint-derived, proinflammatory mediator that is implicated in the joint erosion process and pathogenesis of RA. Serum 14-3-3 eta is elevated in both early and established RA.