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ENA Antibody

Specimen:

Collect

  • One SST

Also Acceptable:
  • One Red Top

Submit

  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.

Special Handling

  • Separate from cells ASAP

Rejection Criteria

  • Grossly Hemolyzed Samples
  • Grossly Lipemic Samples
  • Heat inactivated
  • Microbial Contamination
  • Particulate matter

Stability

Ambient: 8 Hour(s); Refrigerated: 2 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable

Methodology

  • Enzyme-Linked ImmunoSorbent Assay (ELISA)

Performed

Monday, Wednesday, Thursday

Reported

1-4 Day(s)

CPT Codes

  • 86235x2

Interpretive Data

Please see report for interpretive data.

Smith Ab and Sm/RNP Ab Reference Ranges:
<20 Units Negative
20-39 Units Weak Positive
40-80 Units Moderate Positive
>80 Units Strong Positive

A positive Sm/RNP Ab result indicates the presence of antibodies reactive with the Smith (Sm) protein and/or ribonuclear protein (RNP). This Sm/RNP assay cannot distinguish between Anti-Sm and Anti-RNP activity, thus should be considered with the Sm Ab test result to determine clinical significance.

Components

  • 2366 - SMITH AB
  • 2365 - SM/RNP AB
Last Updated: October 24, 2024 @ 9:13 am

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Common Lab Definitions

  • Serum 
  • Plasma 
  • STT