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Laboratory Medicine

Test Directory / IgG4


Brown clotted serum, gel barrier

Common AbbreviationsIgG4
Tube typeBrown clotted serum, gel barrier
Clinical IndicationImmunoglobulin G4-related disease (IgG4RD) is an immune-mediated fibroinflammatory condition that is capable of affecting multiple organs. Common forms of presentation include autoimmune pancreatitis, sclerosing cholangitis, major salivary gland enlargement or sclerosing sialadenitis, orbital disease, retroperitoneal fibrosis.
Specimen TypeBlood
Sample typeSerum
Minimum Volume0.5mL
Special PrecautionsNo special requirements
Stability8 days at 2-8oC, -20oC for prolonged storage.
Turnaround Time2 weeks
Reference Interval<1.3g/L (adults) Age-related ref. ranges for paediatrics quoted on report
LimitationsNo significant assay interference effects were observed when tested with intra lipids (250mg/dL), bilirubin (200mg/L) or haemoglobin (5g/L).
NotesThis test in not currently accredited by UKAS, a comment will be added to reports to this effect
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