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 Test Performed


Analytic Time

5 - 15 days

Soft Order Code


MiChart Code




Laboratory Reference

Mayo FNEOS (Labcorp-Burlington)

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Specimen Requirements

Rejection Criteria

Not protected from light


Yellow Top Tube
Red Top Tube

Normal Volume

0.8 mL serum

Minimum Volume

0.5 mL serum

Additional Information

Test sent to Mayo Clinic Laboratories, performed by Labcorp-Burlington

Billing Information

Fee Codes

CPT Code


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