Test Overview
Test Methodology


Reference Range *

By report

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

7 - 12 days

Soft Order Code
Reference Laboratory
Mayo Wild 85 (ZW85) (National Jewish Health PKRIF)
Special Testing
Specimen Requirements

Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze. For maximum clinical significance, collect a Peak specimen within 15 minutes after the end of an I.V. infusion or 90 minutes after oral intake.

Collection Instructions

Collect blood in a red top tube. Spin and aliquot into a screw capped plastic tube. Freeze and send to Specimen Processing. Have ordering provider fully list: drug dose amount, frequency, method, and date and time of last dose prior to draw.

Alternate Specimen
Red top tube is preferred. Green top tube is acceptable.
Normal Volume
2 mL serum
Minimum Volume
0.5 mL serum
Rejection Criteria
SST tube not acceptable.
Additional Information

Test sent to Mayo Medical Laboratories; performed by National Jewish Health.

CPT Code