Vitamin D Testing | IV Drip & Hydration Clinic London

Vitamin D Testing

Are you Vitamin D Deficient?

Find out in just 15 minutes!

Why test your Vitamin D levels?

Research shows that Vitamin D is important for general health and wellness. Vitamin D is produced in the skin via exposure to the sun, but in the UK more than 50% of the population don’t make enough Vitamin D, and in the winter the Government advises that we should all supplement with Vitamin D because most of us are deficient, when sunlight levels are so weak that we cannot produce Vitamin D even when outside. Even in the summer, Vitamin D deficiency is common due to the use of sunscreen and spending a lot of time indoors.

Signs you may have a Vitamin D deficiency

      Tiredness and fatigue

      Getting ill often

      Poor immune system

      Bone and back pain

      Muscle pain 

      Hair loss

Easy as 1, 2, 3!


1. Easy finger prick test

2. Reliable results in 15 minutes

3. Vitamin D Booster Shot administered


Why do we need Vitamin D?

Every cell in our body needs Vitamin D. In its most extreme forms, Vitamin D deficiency causes rickets in children and osteomalacia (bone softening) in adults. Vitamin D contributes to a healthy immune system and plays a role in the process of cell division. Vitamin D also contributes to the maintenance of healthy bones, muscles and teeth. More information about the importance of Vitamin D can be found on the NHS website. 

Where do I get Vitamin D?

The principal source of Vitamin D is your own skin. A chemical compound naturally present in the outer layers of skin is converted, on exposure to UV-B radiation, to cholecalciferol (vitamin D3). However, we manufacture this Vitamin D only if we expose our skin to UV-B radiation. You can also get Vitamin D from food, supplements, and other UV-B sources.

How much Vitamin D do I need?

The amount of Vitamin D you need depends on many factors include ethnicity, geographical location and diet. It also depends on whether someone is deficient (ie blood tests). 

The body needs at least 4,000 IU/day in order to maintain a healthy concentration of Vitamin D in the blood. Because most of us don’t get enough sun exposure, the little Vitamin D we get this way, plus food and fortified food sources, totals no more than about 2,000 IU/day. So, in order to meet the body’s need for at least 4,000 IU/day, most adults should take supplements. 

Is it important to take Vitamin D daily?

Vitamin D doesn’t have to be taken every day as long as the total dose is sufficient. It can be taken weekly or monthly. The important thing is to achieve and maintain a range of 41-60 ng/ml (102.5-150 nmol/L).

What about Calcium and Vitamin D?

Vitamin D contributes to normal blood calcium levels and contributes to the normal absorption and utilisation of calcium. With inadequate calcium or Vitamin D intake, there is inadequate calcium absorption.

How do I solve a Vitamin D deficiency?

Measure the vitamin D levels in the blood, then achieve Vitamin D intake from UV-B exposure, eating fortified foods, and having a supplement until your levels are 41-60 ng/ml (102.5-150 nmol/L). If you are unsure, you can also ask your GP to check your Vitamin D levels. 

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