Tuli Health - Vitamin D Test
Vitamin D Test
What Is Vitamin D?
Vitamin D is a fat-soluble vitamin that regulates calcium and phosphate homeostasis and is therefore vital for musculoskeletal health. Vitamin D circulates in the blood as both vitamin D3 (colecalciferol) and vitamin D2 (ergocalciferol). In the UK, 80–90% of vitamin D is derived from skin exposure to ultraviolet B radiation from sunlight, with the remaining 10–20% being derived from dietary sources.
What are the common reasons to check Vitamin D level?
- To see if someone has vitamin D deficiency needing vitamin D replacement therapy as part of a health check or as part of an investigation of symptoms which may be caused by vitamin D deficiency or insufficiency.
- To check if the response of the current or past Vitamin D replacement therapy is adequate.
Who are at risk for Vitamin D Deficiency?
- Aged 65 years and over.
- Who have low or no exposure to the sun, for example those who cover their skin; who are housebound or confined indoors for long periods.
- Who have darker skin pigmentation.
- With a malabsorption disorder, or following weight loss surgery.
- With severe liver or end-stage chronic kidney disease.
- Taking certain drugs.
- Who is pregnant or breastfeeding.
- With obesity.
What are the symptoms of Vitamin D deficiency?
- Chronic exhaustion
- Feeling tired all the time
- Hair loss
- Muscle pain
- Bone and lower back pain
- Recurrent infections
What are the complications of vitamin D deficiency?
- Osteomalacia (marked softening of the bones) — may present with lower back pain, bone pain in the shoulder, ribs, pelvis, or legs; muscle pain and weakness; waddling gait; and impaired physical function.
- Osteoporosis (thinning of the bones)
- Falls and fragility fracture.
How is the test carried out?
- Our vitamin D blood test requires a small blood sample
- Your finger-prick test kit will have everything you need and makes checking your vitamin D levels private, fast, affordable, and convenient.
- All you need to do is collect your sample in the morning using our easy-to-follow instructions inside the kit.
- Make sure you send your sample on the same day you take it.
- Use the freepost envelope in your kit and send it directly to our accredited laboratory for analysis.
- If you’re taking a supplement containing biotin, commonly found in products promoting nail, skin, and hair health. It is recommended that you wait at least 48 hours from your last dose before sample collection.
- If you’re taking prescribed biotin you should discuss this with your doctor.
How long does it take for my result to come back?
- Results will be available within 2 working days of receipt of your sample in the laboratory.
What am I expected to see on my lab report about my vitamin D levels?
- Your report will state if your vitamin D levels fall into normal, insufficiency or deficiency range with the appropriate recommendations written on the report.