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Lab Test Dictionary

Methemoglobinemia Evaluation, Blood (MEV1)

Synonyms

Methemoglobin Reductase

Specimen Type

Whole Blood

Performing Lab

Mayo Medical Lab

Epic ID

Other Reference Test

Lab Test Days

Monday-Saturday

Standard TAT

3-25 Days

Collection Information

Specimen Required

3-4 mL Whole Blood collected in an EDTA (lavender-top) tube ***and*** 2.7-6 mL Whole Blood in an ACD Solution B (yellow-top) tube

Container Type

See Below

Collection Instructions

3-4 mL Whole Blood collected in an EDTA (lavender-top) tube ***and*** 2.7-6 mL Whole Blood in an ACD Solution B (yellow-top) tube. Send completed Mayo Metabolic Hematology Patient Info form with specimen to lab.

Processing Information - Lab Use Only

Transport Temperature

Refrigerate-Only

Specimen Stability

Room Temp: Unacceptable; Refrigerated: 72 Hours; Frozen: Unacceptable

Rejection Criteria

Gross hemolysis

Test Volume Required

4 mL Whole Blood collected in an EDTA (lavender-top) tube ***and*** 6 mL Whole Blood in an ACD Solution B (yellow-top) tube

Minimum Test Volume

3 mL Whole Blood collected in an EDTA (lavender-top) tube ***and*** 2.7 mL Whole Blood in an ACD Sol

Processing Instructions

Order in Mayolink and send with Mayo courier Monday-Friday. Send completed Mayo Metabolic Hematology Patient Info form with specimen. Specimen must arrive within 3 days (72 hours) of collection.

Included Tests

Methemoglobin B, Methemoglobin Reductase B, Sulfhemoglogin B, Hemoglobin A2, Hemoglobin A and Hemoglobin F.

Comments

Insurance authorization is required prior to draw for Outpatients. Ok to send on Inpatients.

CPT Codes

83020 (x2), 83021, 82657, 83050, 83060; 82664; 83068; 83789 (Only need insurance authorization for genetic cpt: 88184)

Revised

2/16/23