Specimen Collection

Serum samples should be taken from patients receiving TNF Biologics for at least 10 weeks.

Samples should be taken at drug trough, within the 24 hours prior to a dose.

Please indicate on the form which TNF biologic drug the patient is receiving, otherwise the sample may not be processed.

Test is done at Canterbury Health Laboratories

Click on the link below for more details:

TNF Biologic Drugs

4 mL Adult Plain Blood (Always Required)

0.5 mL Paediatric Microsample Blood (Always Required)
Contact Information

The chemical pathology team can be reached via email: chemicalpathologist@adhb.govt.nz or via Lablink (09) 307 4949 ext 22000 or 09-3078995

Emails will receive priority attention from the on-call chemical pathologist. Include the patients NHI.

After-hours: contact Lablink (Auckland City Hospital ext. 22000 or 09-3078995) or hospital operator for on duty staff after hours .

• Dr Samarina Musaad (Clinical Lead) : SamarinaM@adhb.govt.nz ext. 22402
• Dr Cam Kyle : CampbellK@adhb.govt.nz ext 22052
• Dr Weldon Chiu : WeldonC@adhb.govt.nz ext. 23427
• Dr Campbell Heron : CHeron@adhb.govt.nz ext. 23427
• Dr Sakunthala Jayasinghe Saku.Jayasinghe@adhb.govt.nz
• Dr Owen Yi WenyiYi@adhb.govt.nz

Specimen Transport Instructions for Referring Laboratories

Instructions for Referral to Labplus
Aliquot Instructions	200uL serum (minimum) 1 mL serum (preferred)
Aliquot Transport to CHL	Room temperature

Last updated at 15:33:42 17/04/2026