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BK Virus IgG Antibody (ELISA)

Test Code: 2300

Cpt Code:

86790 (x1)

Clinical Utility

Determining the level of anti-BKV IgG antibodies in both kidney donor and recipient has been reported to be a possible factor in predicting the risk of BK nephropathy, an important cause of allograft dysfunction. Moreover, recent scientific data has shown that BK nephropathy in pediatric kidney recipients is associated with the recipients’ BKV seronegativity pre-transplant, indicating a potential need for pre-transplant BKV serological testing.

Procedure

Indirect Enzyme-Linked Immunosorbent Assay (ELISA)

This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration.

Specificity

The ELISA detects human IgG antibodies to the BKV VP1 protein.

Assay Range

Antibody titers from <40 to >163840. Test results are reported as an antibody titer, which is the inverse of the specimen dilution that produces signal greater than the assay background level (e.g. 1:2560 specimen dilution is reported as 2560).

Causes For Rejection

Specimens beyond their acceptable length of time from collection as indicated in the specimen handling or specimen types other than those listed.

Turnaround Time

1 to 7 business days from receipt of specimen, assay performed weekly on Thursday.

Shipping

Ship Monday through Friday. Friday shipments must be labeled for Saturday delivery. All specimens must be labeled with patient's name and collection date. A Viracor-IBT test requisition form must accompany each specimen. Multiple tests can be run on one specimen. Ship specimens FedEx Priority Overnight® to: Viracor-IBT Laboratories, 1001 NW Technology Dr, Lee's Summit, MO 64086

Specimen Information

2301 plasma - Collect 4-5 mL whole blood in EDTA or ACD tube, centrifuge and transfer 2 mL plasma to sterile, screw top tube. Can be shipped at ambient or frozen temperature Monday through Friday. Specimens shipped at ambient temperature must be received within 96 hrs of collection.
2310 serum - Collect 4-5 mL whole blood in red top tube, centrifuge and transfer 2 mL serum to sterile, screw top tube. Can be shipped at ambient or frozen temperature Monday through Friday. Specimens shipped at ambient temperature must be received within 96 hrs of collection.

Disclaimer

Specimens are approved for testing in New York only when indicated in the Specimen Information field above.

The CPT codes provided are based on Viracor-IBT's interpretation of the American Medical Association's Current Procedural Terminology (CPT) codes and are provided for informational purposes only. CPT coding is the sole responsibility of the billing party. Questions regarding coding should be addressed to your local Medicare carrier. Viracor-IBT assumes no responsibility for billing errors due to reliance on the CPT codes illustrated in this material.

The BKV IgG Antibody test is performed pursuant to a licensed agreement with the National Institutes of Health.

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