Recommendations when to order or not order the test. May include related or preferred tests.
Qualitative test to detect antibodies to John Cunningham (JC) virus. Aids in risk stratification for the development of progressive multifocal leukoencephalopathy (PML) in individuals with multiple sclerosis or Crohn’s disease who are receiving natalizumab therapy.
Unique test identifier.
Process(es) used to perform the test.
Enzyme-Linked Immunosorbent Assay (ELISA)
Days of the week the test is performed.
Expected turnaround time for a result, beginning when ARUP has received the specimen.
New York DOH Approval Status
Indicates test has been approved by the New York State Department of Health.
This test is New York DOH approved.
Plain red or serum separator tube (SST). Also acceptable: Lavender (K2EDTA)
Transfer 1 mL serum or plasma to an ARUP standard transport tube. (Min: 0.5 mL) Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Refrigerated. Also acceptable: Room temperature or frozen.
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Other names that describe the test. Synonyms.
JC polyoma virus
John Cunningham virus
progressive multifocal leukoencephalopathy (PML)
Stratify JCV Antibody with Index
JC Virus Antibody by ELISA, Serum with Reflex to Inhibition Assay