Search our extensive Laboratory Test Directory to find test codes, ordering recommendations, specimen stability information, Test Fact Sheets, and more.
Recommendations when to order or not order the test. May include related or preferred tests.
Most useful to establish autoimmumne etiology in previously diagnosed type 1 diabetes mellitus (DM). Do not use to differentiate type 1 DM from type 2 DM, for most cases.
If pursuing antibody testing to determine autoimmune DM, perform at least two antibody tests. In most cases, use glutamic acid decarboxylase antibody in combination with another antibody test. Other antibody tests include Islet Antigen-2 (IA-2) Autoantibody (3001499), Glutamic Acid Decarboxylase Antibody (2001771), Insulin Antibody (0099228), and Islet Cell Cytoplasmic Antibody, IgG (0050138).
Expected turnaround time for a result, beginning when ARUP has received the specimen.
1-8 days
New York DOH Approval Status
Indicates test has been approved by the New York State Department of Health.
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Serum separator tube or plain red.
Specimen Preparation
Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
Plasma. Grossly hemolyzed or severely lipemic specimens.
Remarks
Stability
After separation from cells: Ambient: 5 days; Refrigerated: 1 week; Frozen: 3 months
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
0.0-15.0 Kronus Units/mL
Interpretive Data
Background information for test. May include disease information, patient result explanation, recommendations, details of testing, associated diseases, explanation of possible patient results.
A value greater than 15.0 Kronus Units/mL is considered positive for Zinc Transporter 8 antibody( ZnT8 ). Kronus Units are arbitrary. Kronus Units = U/mL. This assay is intended for the semi-quantitative determination of antibodies to ZnT8 in human serum. Results should be interpreted within the context of clinical symptoms.
Compliance Category
FDA
Note
Additional information related to the test.
Hotline History
N/A
CPT Codes
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.