Update Type: Test Methodology Changed
Test Updated: 05/17/2023
Test Overview
Reference Range *

Interpretive report provided

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

Test Details
Days Set Up
Monday - Saturday
Analytic Time

3 - 26 days

Soft Order Code
Reference Laboratory
Mayo THEV1
Special Testing
Specimen Requirements

Collect specimens in EDTA (send as whole blood-do not spin), and SST or red top tube. Spin and aliquot only the SST/red top within 2 hours of collection, into a screw capped plastic tube. Send to Specimen Processing refrigerated

Normal Volume
15 mL whole blood AND 0.6 mL serum
Minimum Volume
2.5 mL whole blood and 0.5 mL serum
Storage Temperature
Additional Information

Test performed by Mayo Clinic Laboratories. This evaluation will always include hemoglobins A(2) and F and hemoglobin electrophoresis utilizing cation exchange high-performance liquid chromatography (HPLC) and capillary electrophoresis methods as well as Ferritrin (if a serum specimen is sent). This is a consultative evaluation in which the case will be evaluated at Mayo Clinic Laboratories, the appropriate tests performed at an additional charge, and the results interpreted. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated.

CPT Code
82728, 83021, 83020 x2
Fee Code
AA329, AA928, AA929 x2
Reflex CPT
88184, 85660, 82664, 83068, 83789, 81269, 81259, 81364, 81363, 81479
Reflex Fee Code
AA109, AA110, AA112, AA111, AA108, AA358, AA360, AA363, AA361, AA373