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Laboratory Test Reference Guide

Laboratory Information

Test Name


External Price (excl. GST)


Specimen Collection

Adult Specimen

Gold or Red tube

Paediatric Specimen

Paediatric Gold or Red tube

Instructions for Referral to Waikato Lab

Aliquot instructions

300uL Serum

Aliquot Transport


Test Information



Laboratory Turnaround Time

Batched weekly

Unit of measurement


Reference interval

0 - 100 kU/L

Uncertainty of measurement


Diagnostic Use Or Instructions

  • Don’t perform unproven diagnostic tests, such as immunoglobulin G (IgG) testing or an indiscriminate battery of immunoglobulin E (IgE) tests, in the evaluation of allergy.
  • paediatric patients: Don’t perform screening panels for food allergies without previous consideration of medical history.
  • Food specific IgE testing should not be performed without a clinical history suggestive of IgE mediated food allergy.

IgE testing is indicated when there is a suspicion of an allergic reaction; the suspected allergen should be identified by detailed history and specified for testing. Indiscriminate batteries of IgE tests for foods are expensive and not useful, potentially leading to erroneous diagnoses and inappropriately restrictive diets. 

Electronic Information