Omega-3 Index, Vitamin D & HbA1c Blood Test

The Omega-3 Index, Vitamin D & HbA1c Blood Test measures three clinically important biomarkers linked to long-term cardiometabolic health using a simple at-home dried blood spot sample.

This combined blood test includes the Omega-3 Index (EPA + DHA in red blood cells), 25-hydroxy Vitamin D [25(OH)D], and HbA1c (long-term blood glucose marker). Together, these biomarkers provide a comprehensive overview of cardiovascular balance, metabolic health, inflammation status, and nutrient optimisation.

The Omega-3 Index reflects long-term omega-3 status and is strongly associated with cardiovascular and metabolic function. Vitamin D supports immune regulation, bone metabolism, and endocrine balance. HbA1c reflects average blood glucose levels over the previous 2–3 months and is widely used to assess metabolic control and early glycaemic imbalance.

Deficiencies or imbalances in omega-3 status, vitamin D, or glucose regulation are common — even in individuals who supplement. This test provides clinically relevant data analysed in certified laboratories to support personalised nutrition and long-term health monitoring.

Ideal for individuals focused on cardiovascular optimisation, metabolic performance, healthy ageing, and evidence-based supplementation.

Frequently Asked Questions

What does the Omega-3 Index, Vitamin D & HbA1c Blood Test measure?
This combined test measures the Omega-3 Index (EPA + DHA % in red blood cell membranes), 25-hydroxyvitamin D [25(OH)D], and HbA1c (glycated haemoglobin, reflecting average blood glucose over the past 8–12 weeks). It provides a focused view of cardiometabolic health.

Why combine these three biomarkers?
Omega-3 status, vitamin D status, and long-term blood sugar control each influence cardiovascular and metabolic health independently. Tracking all three gives a clearer picture of inflammation, insulin sensitivity, and overall metabolic resilience than any single marker.

Who should consider this test?
It's ideal for individuals focused on metabolic and cardiovascular health, healthy ageing, weight management, or evidence-based supplementation. It's also relevant for people with a family history of type 2 diabetes or cardiovascular disease.

How is the sample collected?
The test uses a single dried blood spot (DBS) card. A few drops from a fingertip cover all three biomarkers — no venous blood draw or clinic visit required.

Do I need to fast before the test?
No. HbA1c reflects long-term average blood sugar and is not affected by recent meals. The Omega-3 Index and vitamin D also don't require fasting.

How accurate is the test?
The Omega-3 Index is analysed by gas chromatography, vitamin D by LC-MS/MS, and HbA1c by high-performance liquid chromatography (HPLC) — the same clinically validated methods used in hospital and research laboratories.

How long does it take to get results?
Results are available 3–5 business days after your sample arrives at the lab.

Where is my sample analysed?
Samples from the Asia-Pacific region, including Australia and New Zealand, are analysed in our accredited laboratory in Australia. Samples from Europe and the United Kingdom are processed in our certified EU laboratory, ensuring all results meet international clinical standards for accuracy and reliability.