About Ngaio Diagnostics

Ngaio Diagnostics is a privately owned supply company based in Nelson, New Zealand. Established in 1991, we specialise in the distribution and support of quality products to hospital laboratories, community clinical laboratories, veterinary laboratories, veterinary practices, food testing & environmental laboratories and food processors.

As a small privately owned company, we take your business personally. Doing business with us means you will deal with a team who know and understand what you are looking for. Dealing with us is quick and easy and we will always have you in mind as we source or develop new and improved products.


Stuart McKenzie (Managing Director)

Stuart has been with Ngaio Diagnostics since 2015 and came with a background in sales and business development. He also has a BSc degree in chemistry. Contact Stuart for all general business inquiries.

Contact Stuart on:
Telephone: +64 3 548 4727
Mobile: 022 351 5952
Email: stuart.mckenzie@ngaio.co.nz


Rob McKenzie (Founding Director)

Rob founded Ngaio Diagnostics in 1991 after working as a hospital scientist in Clinical Biochemistry and in the area of Quality Management.

Contact Rob on:
Telephone: +64 3 548 4727
Mobile: 021 464 246
Email: rob.mckenzie@ngaio.co.nz


Dr Mak Sarwar (Head of Clinical Diagnostics – application specialist in Dako Pathology & Molecular Oncology)

Mak joined Ngaio Diagnostics in January 2023 as an application specialist with a focus on Agilent Dako and molecular oncology products. He joins Ngaio from a previous position as a postdoctoral research fellow in gynaecologic oncology and is based in Christchurch.

Contact Mak on:
Mobile: 027 648 8481
Email: mak.sarwar@ngaio.co.nz 



Manoj Sinh (Technical Sales Specialist – Randox Specialist and Clinical Diagnostics)

Manoj joined the Ngaio team from April 2024 to focus on the Randox  portfolio. With a strong background in research and multiple scientific disciplines he is well suited to support our growing Randox customer base.

Contact us on:
Mobile: 022 3515952
Email: manoj.sinh@ngaio.co.nz



Maral Arab (Technical Sales Specialist – Food, Hygiene and Infection Control)

As Iona has left us to cycle the world (good luck Iona) we are in the process or finding a suitable replacement. In the meantime our established team will be able to assist with all your requirements and support needs.

Contact us on:
Mobile: 027283 8633
Email: maral.arab@ngaio.co.nz



Atif Malik   (Technical Sales Specialist – Point of Care , Drug Testing and New Product Release)

Atif  joined Ngaio in May 2024 with a focus on our growing toxicology and other selected product portfolios. Atif will also take a role in new product releases across all industries

Contact Atif on:
Mobile: 027 357 5020
Email: info@ngaio.co.nz



Dr Magdalena Brunner (Sales and Technical Support – Molecular Biology & Life Sciences)

Magdalena joined Ngaio in 2022 as our Sales and Technical support specialist for our Molecular Biology portfolio. Magdalena holds a DVM, PhD from University of Bern Switzerland.

Contact Magdalena on:
Mobile: 021 464296
Email: magdalena.brunner@ngaio.co.nz




Kerry Ford (Office Manager)

Kerry is our accounts keeper and administration whizz. Please contact Kerry for all queries regarding accounts or administration.

Contact us on:
Telephone: +64 3 548 4727
Email: accounts@ngaio.co.nz




Ashleigh Churchill (Administration Assistant)

Ashleigh joined our team in early 2022 to aid with the influx of work that the Rapid Antigen Tests brought with them! She is staying on to continue to take the administrative load off Kerry as our business continues to expand.


Telephone: +64 3 548 4727
Email: ashleigh.churchill@ngaio.co.nz