NAD+ Blood Test

NAD is a natural compound found in every cell of the body. It helps convert food into energy, repair damaged DNA and regulate important cellular functions. As we age, our NAD levels gradually decline, which can affect how well our bodies function.

Measuring your NAD levels can give you valuable insight into your overall health. Low levels may suggest your cells are struggling to generate energy or repair themselves efficiently, while optimal levels can indicate strong resilience and healthy functioning. Regular testing allows you to track your NAD levels over time and make adjustments through diet, exercise or NAD+ supplementation, through options such as liposomal oral capsules and at-home injections, to help maintain your well-being.

Monitoring NAD is especially important for people who want to support healthy ageing, improve energy levels, or understand how their body responds to lifestyle factors such as stress, poor sleep or diet choices.

NAD (nicotinamide adenine dinucleotide) and NADH (its reduced form) are essential for keeping our cells running smoothly. They act as coenzymes in metabolic processes, meaning they help enzymes do their jobs in converting nutrients into energy. Without sufficient NAD and NADH, our cells would struggle to produce the energy needed to function properly.

Beyond energy production, NAD also supports DNA repair, cellular defence against stress and healthy ageing. Declining NAD levels have been linked to tiredness, reduced cognitive function and greater susceptibility to cell damage over time. By supporting NAD and NADH, the body is better equipped to repair itself and maintain resilience against everyday stressors.

Learn more about NAD+ in our beginner’s guide.

Your results will provide a clear picture of your NAD+ and NADH levels. This helps you understand whether your levels are within a healthy range, too low, or unusually high due to supplementation.

The test can show:

• Whether your NAD levels are optimal for energy and cell health

• If your levels are lower than expected, this may suggest reduced resilience or early signs of imbalance

• If your levels are unusually high, which may indicate over-supplementation

• Your NAD/NADH ratio, which is essential for cellular balance

Normal ranges of NAD+, NADH and NAD+/NADH ratio are:

The Goodbody NAD Blood Test uses a straightforward finger-prick method. You do not need to visit a clinic, as the sample can be taken in the comfort of your own home. You can choose, however, to have your sample collected in a professional clinic or by a nurse if you wish.

At the laboratory, advanced testing using NADMED technology is carried out to measure your NAD+ and NADH levels accurately. These results may help inform whether any lifestyle changes or further medical advice should be considered.

Your kit contains everything you need to take a sample at home with ease. Each Goodbody NAD Blood Test kit includes:

• A CE-marked blood collection kit

• Instructions for taking the sample correctly

• Pre-paid return packaging

• Access to your results

Why should I choose a Goodbody NAD blood test?

Goodbody is a trusted provider with a strong reputation for accuracy and service, as reflected in their positive reviews from customers who value the ease, reliability and support offered [1].

When is it best to take a NAD blood test?

If you are considering beginning to supplement with NAD, you may wish to understand your NAD levels before you begin. This will provide data on your starting levels of NAD without supplementation. 

It could be an ideal starting point if you are considering at-home NAD therapy in the form of a NAD+ injection by Vivere.

You may also wish to test again once you have been taking your NAD supplements for a few months. This will allow you to track and measure how effective your NAD supplements and dosing schedules are.

How do I take a NAD test?

The process is straightforward. You can either take a small blood sample from your finger, collect it in the tube, and place it in the prepaid return envelope yourself, or book a visit with a clinic or nurse. The instructions included in your kit make the process clear and easy to follow.

How do I book a clinic visit?

Booking an appointment for your NAD blood test is quick and easy. Simply select ‘Book Now’ on the test page of your choice. You can then select your chosen clinic location, date and time. 

How long does it take to get my results?

Once the laboratory has received your blood sample, results are usually available within 7 working days.

What if I make a mistake taking my blood sample?

If you have difficulty collecting your sample, the instructions will guide you on how to try again safely. If an error is made or the laboratory is unable to process your sample, you may be offered a replacement kit so you can repeat the test.

Where can I order a NAD blood test?

You can order the Goodbody NAD Blood Test directly from UK Meds. Ordering online is quick and discreet, with the test delivered straight to your door.

Where can I order NAD supplements from?

You can order high-quality NAD supplementation from UK Meds in the form of the Vivere NAD+ injection pen kit. The Vivere kit includes everything you need to get started with NAD supplementation, including a premium injection pen, sterile needles, a travel case and high-quality NAD+.

Vivere NAD+ Injections deliver high-purity Nicotinamide Adenine Dinucleotide (NAD) directly into the body for rapid absorption and maximum effectiveness. By bypassing the digestive system, they help restore cellular NAD levels.

Manufactured to the highest standards in a UK-based, GMP-licensed, NHS-approved facility, each batch undergoes rigorous NHS-level testing for purity, potency and sterility. The NAD+ is stored in pharmaceutical-grade glass vials and produced using only drug-grade, endotoxin-free ingredients in ultra-sterile conditions. This ensures every injection meets exceptional safety, quality and reliability standards.

[1] Goodbody Clinic Reviews | Read Customer Service Reviews of goodbodyclinic.com - Trustpilot