NAD+ Blood Test
£198 ✓ In Stock
Your sample goes to a UKAS accredited laboratory meeting ISO 15189 standards.
After you receive your order confirmation email, please reply with your date of birth.
How it works
Your testing journey
From order to results in four simple steps. Full transparency on where each step happens and what it costs.
Receive your kit by post
Dispatched same working day if ordered before 3pm. Royal Mail Tracked delivery, typically 1–3 working days. 90% of kits arrive within 24 hours.
Visit a partner clinic
Book a phlebotomy appointment at one of our 365+ UK partner clinics. Take your kit with you — the phlebotomist will collect your sample using the materials provided.
Phlebotomy fee applies (paid at clinic)
Venous blood draw at a clinic
A trained phlebotomist takes a small blood sample from a vein in your arm using the vacutainers provided in your kit. The appointment takes around 10 minutes.
Return by prepaid envelope
Seal your sample in the biohazard bag provided and drop it in any Royal Mail postbox using the prepaid Tracked 24 envelope. Post Monday–Thursday for best results.
Venous Blood Collection Kit
This kit is sent to you and taken to your chosen clinic. The phlebotomist will collect your sample using the materials provided.
- 1Vacutainer blood collection tubes
- 2Needle and butterfly needle
- 3Tourniquet
- 4Alcohol swab
- 5Cotton wool and gauze
- 6Adhesive plaster
- 7Biohazard specimen bag
- 8Prepaid return envelope (Royal Mail Tracked 24)
- 9Laboratory request form
- 10Instructions for the phlebotomist
NAD+ is the active, oxidised form of nicotinamide adenine dinucleotide. It serves as an electron acceptor in metabolic reactions, driving cellular energy production in the mitochondria. NAD+ is also a substrate for sirtuins (SIRT1–7) and poly-ADP-ribose polymerases (PARPs), which regulate DNA repair, inflammation, and cellular stress responses. Higher NAD+ levels are associated with improved metabolic function and cellular resilience. As we age, NAD+ levels decline naturally — by age 50, levels may be half what they were at age 20. This decline is linked to reduced energy, slower recovery, impaired DNA repair, and accelerated ageing processes. Low NAD+ levels may suggest suboptimal cellular energy production, increased oxidative stress, or the natural decline associated with ageing. Many individuals with low levels choose to increase NAD+ precursor supplementation (NMN, NR) or explore other interventions such as caloric restriction, exercise, or NAD+ IV therapy. Tracking your NAD+ allows you to validate your supplementation strategy and optimise your longevity protocol.
NADH is the reduced form of NAD+, created when NAD+ accepts electrons during glycolysis and the citric acid cycle. NADH carries these electrons to the mitochondrial electron transport chain, where they are used to produce ATP — your cells' primary energy currency. The ratio of NAD+ to NADH reflects your cellular redox state and metabolic efficiency. A healthy ratio indicates efficient cellular metabolism. A low ratio (relatively more NADH) may suggest metabolic inefficiency, while an unusually high ratio could indicate oxidative stress. Your results should be interpreted alongside other health markers and discussed with a healthcare professional if you have concerns. For those tracking the efficacy of longevity interventions, consider retesting every 3–6 months to monitor changes over time.
This test is for screening and information only — it is not a medical diagnosis or professional advice. Please have your results reviewed by a qualified doctor or healthcare provider who can explain what they mean for your personal health situation. If your results show anything outside the normal range, or if you're worried about your health, see your doctor as soon as you can. Don't change any medications or treatments based on these results alone — always talk to your healthcare provider first.
NO CLINICS, NO QUEUES, NO HASSLE
Four steps to clarity
01
Pick your panel
Browse over 200 clinically designed test kits and choose the one that fits your goals.
02
Kit to your door
Everything you need arrives in discreet packaging with step-by-step instructions inside.
03
Collect your sample
Follow the simple instructions in your kit — whether it's a finger-prick at home or a venous draw at a partner clinic.
04
Insights delivered
Clear, easy-to-understand results sent to you online with actionable health guidance.
Frequently asked questions
This test measures NAD+ (Oxidised Form), NADH (Reduced Form). Check the full biomarker list on this page for detailed descriptions of each marker and what it tells you about your health.
Check the Special Instructions section on this page. As a general rule, if the panel includes cholesterol, triglycerides, glucose, or insulin, fast for 8-12 hours. For most hormone, vitamin, and antibody tests, fasting is not required. Morning collection (7-10am) is preferred.
Follow the instructions in your kit. For finger-prick tests: warm your hands, use the lancet as directed, fill the tube to the marked line. For venous tests: attend a phlebotomy clinic with your laboratory request form. Post your sample the same day — avoid Fridays and bank holidays.
Results are typically available within the timeframe shown on this page. You will receive a notification when ready to view online. Results include reference ranges and guidance.
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