Test Overview
Test Methodology
Enzyme immunoassay (EIA)
Test Usage
Increased levels of neopterin are found during impaired renal function and viral infection in transplant patients. Elevated levels are also indicators for conditions related to impaired cellular immunity.
Reference Range *
Adults: <2.5 ng/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Wednesday
Analytic Time
5 - 15 days
Soft Order Code
FNEOS
MiChart Code
FNEOS
Laboratory
Sendout
Reference Laboratory
Mayo FNEOS (Labcorp-Burlington)
Section
Special Testing
Specimen Requirements
Collection
Collect specimen in an SST or red top tube, and wrap to protect from light. Spin and aliquot into an amber screw capped, PFL tube. Send to Specimen Processing frozen
Normal Volume
0.8 mL serum
Minimum Volume
0.5 mL serum
Storage Temperature
Frozen preferred, refrigerated ok for 72 hours
Rejection Criteria
Not protected from light
Additional Information
Test sent to Mayo Clinic Laboratories, performed by Labcorp-Burlington
Billing
CPT Code
83520
Fee Code
AA629