Limited time offer! 10% off your first blood test order!
Twelve biomarkers. One definitive picture of your nutritional status. Remove the guesswork from supplementation for good.
or 4 interest-free payments of £37.25 with Klarna
An in-depth 12-marker nutritional screen covering fat-soluble vitamins, B vitamins, key minerals, homocysteine, and omega-3 index.
Standard dietary advice and multivitamin supplementation cannot substitute for knowing your actual nutritional status. This twelve-marker panel is the most thorough nutritional assessment we offer outside of specialist metabolic testing. It covers vitamin D and vitamin A (both fat-soluble vitamins that accumulate and can reach toxic levels), the B-vitamin cluster (B12, folate, B6), homocysteine (a cardiovascular and methylation risk marker elevated by B-vitamin deficiency), key minerals (iron via ferritin, magnesium, zinc, selenium), and the omega-3 index (the ratio of EPA and DHA in red blood cell membranes, which reflects long-term omega-3 intake). Together these markers provide the clarity needed to personalise supplementation with confidence, remove guesswork from dietary changes, and give practitioners a complete nutritional baseline. All results are reviewed by a GMC-registered physician.
Understand what each marker measures, why it matters, and what the science says — not just a list of numbers.
This panel is designed for adults who want a comprehensive, evidence-based picture of their metabolic health — not a GP referral panel.
Anyone following a specific dietary protocol (vegan, keto, carnivore, low-FODMAP)
People spending significant amounts on supplements who want to validate their approach
Individuals with complex fatigue, cognitive, or mood symptoms not explained by standard blood tests
Practitioners seeking a patient-ready nutritional baseline
People with known malabsorption conditions (coeliac disease, Crohn's, post-bariatric surgery)
Serum measures of several markers in this panel reflect circulating levels rather than tissue stores. Magnesium in particular is tightly regulated in serum; a normal result does not exclude intracellular depletion. Similarly, selenium status is better assessed by erythrocyte glutathione peroxidase activity than by serum selenium alone, though serum selenium provides a useful screening result. The omega-3 index is a validated long-term exposure marker but is not a substitute for dietary analysis. Homocysteine rises with dehydration, impaired renal function, and during smoking; these confounders should be considered during interpretation. Vitamin A toxicity requires context from dietary intake, supplementation history, and other clinical markers and should not be diagnosed on a single raised result.
From order to physician-reviewed report in as little as three working days.
Venous draw required for the full 12-marker panel.
10-hour fast; water permitted. No supplements on the morning of collection.
Analysed within 24 to 48 hours of receipt.
Physician-reviewed nutritional commentary in 3 to 5 working days.
Three options designed to fit your schedule, location, and preference — all producing a laboratory-standard sample.
Adults 18+ in mainland UK. Not suitable if you have had a transfusion in the last 3 months.
Order anytime; kit dispatched within 24 hours Mon–Fri.
Allow 24–48 hours for sample transit on top of lab processing time.
Adults 18+ within 20 miles of a serviced city centre.
Mon–Sun, 06:00–20:00. Next-day booking typical.
Sample reaches the lab within 24 hours of collection.
Adults 16+ with photo ID. Paediatric draws by appointment at selected sites.
Mon–Fri, with Saturday hours at most metropolitan locations.
Samples processed same-day at the receiving clinic.
Every test is processed in a UKAS ISO 15189-accredited laboratory, overseen by GMC-registered physicians, and governed by UK GDPR. No overseas processing, no offshore data.
Follow these guidelines to ensure accurate, reproducible results. Most markers are sensitive to recent food, exercise, and sleep.
Can't find your answer? Our clinical support team is available Monday to Friday, 9am–5pm.
Contact supportHomocysteine is a sulphur-containing amino acid produced during the metabolism of methionine (an essential amino acid found in meat, fish, and dairy). In a well-nourished body, homocysteine is rapidly converted to either cysteine or methionine, requiring vitamins B6, B12, and folate as cofactors. When these B vitamins are insufficient, homocysteine accumulates in the blood. Elevated homocysteine is associated with endothelial damage, increased cardiovascular risk, cognitive decline, and poor methylation efficiency. It is therefore a sensitive integrated marker of the entire B-vitamin methylation pathway rather than a disease diagnosis.
The omega-3 index measures the proportion of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) in red blood cell membranes, expressed as a percentage of total fatty acids. Because red blood cells are replaced every 90 to 120 days, this metric reflects three months of omega-3 intake rather than just recent meals. A result below 4 percent is considered high risk for cardiovascular events. Between 4 and 8 percent is intermediate. Above 8 percent is associated with optimal cardiovascular and cognitive protection. Most UK adults test between 4 and 6 percent.
Yes, in the early stages. Homocysteine rises when B12, folate, or B6 levels fall below the threshold required for efficient methylation. If only one of these three nutrients is mildly depleted, the others may compensate sufficiently to keep homocysteine within the reference range. A mildly elevated homocysteine is therefore more specific for deficiency than a normal result is for adequacy. The panel includes direct B12, folate, and B6 measurements, which provides more sensitivity than homocysteine alone.
Yes. The UK has selenium-poor soils, which means that grain crops grown domestically contain relatively little selenium. UK dietary surveys consistently show a significant proportion of the adult population consuming below the recommended nutrient intake for selenium. Low selenium is associated with impaired thyroid function (selenium is required for the conversion of T4 to active T3), reduced antioxidant capacity, and potentially increased cancer risk. Brazil nuts (one to two per day) are the most efficient dietary source, providing more selenium per serving than any supplement.
Elevated serum retinol can indicate excessive supplementation with preformed vitamin A, which is fat-soluble and accumulates in the liver rather than being excreted. Chronic vitamin A toxicity causes liver damage, bone pain, hair loss, and raised intracranial pressure. It is most commonly seen in individuals taking high-dose retinol supplements (not beta-carotene) or consuming large amounts of liver. A raised result will be flagged by the physician commentary, which will recommend avoiding further vitamin A supplementation and consulting a GP for liver function follow-up.
Yes, we recommend stopping all supplements for 48 hours before collection if your goal is to establish a true baseline nutritional status. If you want to check whether your current supplementation programme is achieving adequate levels, continue as usual but note each supplement and its dose when reviewing your results. The physician commentary will indicate whether each result is in the adequate range and what, if anything, needs to be adjusted.
