The Compass biomarker library

What Compass tests

The Compass programme includes 3 tests per year - one broad baseline test, and 2 personalised follow-ups. See what's included in the full library and learn what each biomarker measures, why it matters, and what your levels mean.

Lipids

11 markers
Lipids are the fats and cholesterol your body uses to build cells and store energy. Their balance is a strong predictor of long-term heart and blood vessel health.

Blood sugar

1 marker
Your average blood sugar over recent months is a core measure of metabolic health. Persistently raised levels are an early signal of insulin resistance and type 2 diabetes risk.

Kidney function

3 markers
Your kidneys filter waste, balance fluids, and help regulate your blood pressure around the clock. These markers can flag changes before symptoms show up.

Sex hormones

8 markers
Sex hormones shape your energy, mood, libido, and muscle and bone strength. Tracking them gives context for changes you can feel but can't always explain.

Micronutrients

9 markers
Micronutrients are the vitamins, minerals, and fatty acids your body needs daily but can't make itself. Even small shortfalls can drain your energy, immunity, and focus.

Liver function

7 markers
Your liver handles hundreds of jobs, from processing food and drink to clearing out toxins. These markers show how well it's coping with the workload.

Thyroid function

6 markers
Your thyroid sets the pace your body runs at — affecting energy, weight, mood, and temperature. Small imbalances can leave you feeling flat, foggy, or out of sync.

Inflammation

1 marker
Inflammation is your immune system at work. Short bursts protect you, but low-level chronic inflammation is linked to long-term disease — and this is your clearest window into it.

Wearables & other metrics

27 markers
Markers of daily activity, sleep, physical function, and body composition
Weekly walking time
Weekly light intensity exercise
Weekly moderate intensity exercise
Weekly vigorous intensity exercise
MET minutes
Weekly sitting time
Weight
BMI
Waist circumference
Waist-to-height ratio
Stress rating