Category
SPECIAL CHEMISTRY.
Sub Category
IMMUNE.
Synonyms/Aliases
IMMUNOGLOBULIN G, SUBCLASS 4.
Abbreviations
IgG4.
Type
INDIVIDUAL TEST
7 Days
RESULTS READY/ REPORTED IN 7 WORKING DAYS.
Method
IMMUNOASSAY.
Temp
REFRIGERATED (2℃-8℃).
Setup
BATCHED.
Components Parameters
NOT APPLICABLE.
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
N/A
Sample type
SERUM.
Container/ preservative
SERUM SEPARATOR TUBE (SST/ GEL) OR PLAIN (RED TOP) VACUTAINER.
Sample volume
AT LEAST 2ML.
Rejection criteria
LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE.
Other Instructions
CENTRIFUGE SST (SERUM GEL TUBES) WITHIN 1-2 HOURS OF COLLECTION. CENTRIFUGE RED TOP VACUTAINERS AND ALIQUOT SERUM WITHIN 1-2 HOURS OF COLLECTION. THE SEPARATION VIAL MUST BE LABELED WITH AT LEAST 2 PATIENT IDENTIFIERS AND THE SAMPLE TYPE.
Reference intervals
AGE & GENDER APPROPRIATE VALUES ARE PROVIDED ON THE REPORT.
Clinical Utility
DIAGNOSIS OF IgG4-RELATED DISEASES E.G. AUTOIMMUNE PANCREATITIS INLAMMATORY ORBITAL PSEUDOTUMOR, SCLEROSING SILADENITIS ETC.
Test Limitations/ Confounders
ELEVATED LEVELS CAN OCCUR IN OTHER DISORDERS E.G. ALLERGY.