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Laboratory Test Reference Guide

Laboratory Information

Test Name

IgG subclass 4

Synonyms

IgG4 subclass
IgG subclasses

Specimen Collection

Patient Specimen

5 mL blood in gold tube or 0.3 mL separated serum.

Minimum Volume

0.3 mL serum

Test Information

Department

Immunology

Test Availability

Mon - Fri, 0800 - 1630 excl. Public Holidays

Laboratory Testing Time

1 week

Method

Nephelometry

Unit Of Measurement

g/L

Reference Interval

Age related Reference Intervals - see attached.

Reference Interval Attachments

Uncertainty Of Measurement

<20%

Diagnostic Use Or Instructions

IgG4, if specifically requested for IgG4-related disease will be measured however IgG subclasses are no longer performed at Waikato Immunopathology Laboratory because their role in the diagnosis of immune deficiency is extremely limited.  If you want IgG subclasses or IgG4, please contact the laboratory to discuss this.

Instructions for Referral to Waikato Lab

Aliquot Transport

fridge

Electronic Information

Registration Code

IGG4

HL7Mapping Code

$IGG4

LOINC Code

2469-5