Zinc Transporter 8 (ZNT8) Antibody

Test Codes

EPIC: LAB1232003, Beaker: ZNT, AB, Quest: 93022

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport.

Preparation for Courier Transport

Transport: 1.0 mL serum, room temperature (20-26°C or 68-78.8°F). (Minimum: 0.5 mL)

Rejection Criteria

• Gross hemolysis.
• Grossly lipemic.
• Grossly icteric
• Specimens other than serum.
• Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to plastic transport tube and maintain at room temperature (20-26°C or 68-78.8°F) prior to transport

Transport: 1.0 mL serum, room temperature (20-26°C or 68-78.8°F). (Minimum: 0.5 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 7 days
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Quest Diagnostics, Wood Dale, IL.

Performed

Wednesday, Saturday.
Results available in 5-6 days.

Reference Range

<15 U/mL

Test Methodology

Qualitative Immunoblot.

Clinical Utility

Zinc Transporter 8 (ZnT8) Antibody – Patient population is primarily children and adolescents to confirm a diagnosis of type 1 diabetes.

CPT Codes

86341

Contacts

Last Updated

11/25/2025