ARUP's Laboratory Test Directory

Islet Cell Cytoplasmic Antibody, IgG : 0050138

Mnemonic: ANTI-ISLET

Ordering Recommendation: Not recommended in routine evaluation or management of diabetes mellitus (DM). Glutamic Acid Decarboxylase Antibody (GAD) (2001771) and IA-2 Antibody (insulinoma antigen 2) (0050202) recommended for initial screening of suspected cases of type 1 DM.
Methodology: Semi-Quantitative Indirect Fluorescent Antibody
Performed: Mon, Wed, Fri
Reported: 1-3 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Plasma. Contaminated, hemolyzed, or severely lipemic specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
< 1:4 No antibody detected.
Interpretive Data: Islet cell antibodies (ICAs) are associated with type 1 diabetes (T1D), an autoimmune endocrine disorder. These antibodies may be present in individuals years before the onset of clinical symptoms.  To calculate Juvenile Diabetes Foundation (JDF) units: multiply the titer x 5 (1:8  8 x 5 = 40 JDF Units).
CPT Code(s): 86341
Cross References: Anti-Islet Cell Antibody (Islet Cell Antibody, IgG), CICA (Cytoplasmic Islet Cell Antibody) (Islet Cell Antibody, IgG), ICA (Islet Cell Antibody, IgG)