Our telephone lines open Monday at 7:30 am

  • 20 years’ experience
  • Real Doctors
  • Confidentiality
  • No hidden charges

Vitamin D

Vitamin D deficiency symptoms

Vitamin D is essential for bone health and glucose metabolism. It helps us absorb the calcium and phosphorous in our diet that keeps teeth and bones healthy.

Vitamin D is used by the body in regulating levels of calcium and phospate, which are the primary nutrients that protect teeth, bones, and muscles, and keep them strong. We get most of the vitamin D we need from the direct contact of sunshine with the skin during the warmer months. Some foods also contain vitamin D, such as oily fish, liver, red meat, and eggs. Some foods are fortified with vitamin D as well.

Low levels of vitamin D can lead to decreased bone density, osteoporosis, and osteomalacia in adults, and rickets in children. It is more common to be deficient in vitamin D during the winter months.

Please note that regular blood testing is required when taking vitamin D supplements.


Preparing for test

Please arrive for this test well-hydrated, to make the procedure easier.

During the test

This test is a simple blood test. A needle is inserted into a vein, usually on the inner arm near the elbow, and a small amount of blood is drawn. You may feel a pricking or scratching sensation.

Type of sample taken:



The results will be sent to you as a PDF attachment by email. In case you had a consultation with one of our GPs they will give you a call with the interpretation of the results as well.

If you decide to have just a blood test with us, no interpretation is provided. In that case you can take the results for interpretation to your own doctor or book a consultation later with us.


How do we get vitamin D?

Most of the vitamin D in our bodies is created from direct sunlight on the skin. Being outside in the sunshine every day, for a short period of time (10 minutes for lightest skin tones, longer for darker), with forearms, hands or lower legs uncovered and without sunscreen through the Spring, Summer and early Autumn, from 11am – 3pm, is the best way to promote your body’s production of vitamin D.

Longer sun exposure is not thought to cause additional benefits, and it is important that you are careful not to burn.You can also increase vitamin D levels through your diet. Oily fish such as salmon, sardines, and mackerel are high in vitamin D, and butter and eggs (especially the yolks) are also good sources.

Small amounts of Vitamin D are added to some foods such as breakfast cereals, soy and dairy products, and to all infant milk formula.

What is the function of Vitamin D in the body?

Vitamin D helps your body to absorb calcium and promotes bone growth and bone health. Deficiency in Vitamin D is associated with bone disease, as well as depression, heart disease, and some cancers.

Am I low in Vitamin D?

If you think you might be low in Vitamin D, the best thing to do is come in for a test. The doctor may recommend that you test your Vitamin D levels if you are experiencing symptoms such as fatigue and poor concentration, muscle weakness or pain, joint pain, insomnia or light sleep, headaches, and bladder or digestion problems.


Vitamin D

Related to Blood tests

  • Follow us:

Please note that Walk-in Clinic is a private medical centre and not an NHS service.
City Walk-in Clinic Ltd company registration no. 07472804

Designed By Caliston
Copyright © 1998 - 2018 City Walk-in Clinic Ltd. All Rights Reserved.