What blood tests check vitamins & nutrition?
Vitamins, minerals and fatty acids that support energy, immunity and wellbeing. Tests available in this category include Ferritin — Iron Stores, Active Vitamin B12, Vitamin D, 25-OH, Omega-3/Omega-6. Each test includes a home collection kit, prepaid tracked return and professional laboratory analysis.
Browse all OptiBlood tests or explore the individual tests below.
These tests provide laboratory information to help you understand your health. They are not a diagnosis and do not replace advice from an appropriate healthcare professional.
Vitamins & Nutrition
Vitamins, minerals and fatty acids that support energy, immunity and wellbeing.
4 tests
Measures ferritin, reflecting your body’s iron stores. This is a Ferritin test, not an Iron Status Profile.
Ferritin
24–72h
Consider the Ultimate Energy & Fatigue PanelMeasures the active form of vitamin B12.
Active Vitamin B12
24–72h
Consider the Ultimate Energy & Fatigue PanelVitamin D, 25-OH
HomeMeasures vitamin D levels.
Vitamin D, 25-OH
24–72h
Consider the Ultimate Energy & Fatigue PanelOmega-3/Omega-6
HomeMeasures omega-3 and omega-6 fatty acid levels.
Omega 3, Omega 6
5–7 working days
Consider the Ultimate Energy & Fatigue PanelRelated health bundles
Women's HealthComplete Well Woman Screen
A broad female health check covering thyroid function, iron stores, cholesterol, blood sugar and liver health.
- Home collection kit included
- Prepaid return included
- Laboratory analysis included
⏱ 24–72h · 5 tests/profiles · 16 unique biomarkers
Energy & NutritionUltimate Energy & Fatigue Panel
Investigates common nutritional and thyroid-related factors associated with tiredness, low energy and fatigue.
- Home collection kit included
- Prepaid return included
- Laboratory analysis included
⏱ 24–72h · 4 tests/profiles · 6 unique biomarkers
Two-Person BundleCouples Comprehensive Health Bundle
Two individual home health-testing kits — a Complete Well Man Screen (15 biomarkers) and a Complete Well Woman Screen (16 biomarkers) — giving 31 combined biomarkers with two prepaid Royal Mail Tracked 24 return mailers.
- Home collection kit included
- Prepaid return included
- Laboratory analysis included
⏱ 24–72h · 2-person bundle · 31 unique biomarkers