Test Details

Mnemonic

ENCS

Ordering Code

3800079

CPT-4 Code(s)

86255 x 19, 86341, plus others as appropriate, at additional cost

Specimen Information

Patient Preparation

Patient should have no general anestetic or muscle-relaxant drugs in 24 hours prior to draw.
Collection is recommended before starting immunosuppressant therapy.
Due to potential interference, test should not be requested in patients who recently have been given radioisotopes diagnostically or therapeutically. The waiting period before specimen collection will depend on the isotope administered, the dose given and individual clearance rate. Specimens will be screened for radioactivity prior to analysis. Radioactive specimens received will be held for 1 week and assayed if sufficiently decayed, or canceled if radioactivity remains.

Collect

Red top

Specimen Preparation

Centrifuge, remove serum from cells and send 4.0 mL serum refrigerated in a screw capped plastic vial.

Alternate Specimen

Serum: Serum separator tube (SST)

Minimum Volume

2.5 mL

Transport Temperature

Refrigerated

Rejection Criteria

Gross hemolysis, gross lipemia, gross icterus

Stability

Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 28 days

Methodology

Indirect Immunofluorescence
Cell Binding Assay
Western Blot
Radioimmunoassay
Live Cell Assay
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Reference Range

See report
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Performing Laboratory

Mayo Clinic Laboratories
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New York DOH Approval Status

Yes
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