What’s in the Kit

• Test cassette (lateral-flow immunoassay for 25(OH)D)
• Buffer solution vial
• Sterile lancet and alcohol swab
• Capillary tube or dropper for blood collection
• Instruction leaflet

What It’s For

This test helps assess your body’s vitamin D status, which is important for:

• Bone and muscle health
• Immune system function
• Reducing tiredness, fatigue, and low mood linked to deficiency

Low vitamin D levels are common in the UK, especially during autumn and winter or among people with limited sun exposure.

Directions for Use

• Adults (18+): read the leaflet carefully before testing.
• Clean your fingertip with the alcohol swab and use the lancet to obtain a drop of blood.
• Collect the sample with the capillary tube and add it to the cassette sample well.
• Add the buffer drops as instructed and start timing.
• Wait around 10 minutes and interpret the result according to the colour guide provided.
• Refer to the leaflet for the meaning of each result band — typically:
  • Deficient: < 25 ng/mL (low)
  • Insufficient: 25–75 ng/mL (borderline)
  • Adequate: > 75 ng/mL (normal)

Precautions & Warnings

• For human in-vitro diagnostic use only. Not for veterinary use.
• Single-use only. Dispose of the kit safely after use.
• Do not use after expiry or if the packaging is damaged.
• This test provides a semi-quantitative indication of vitamin D levels and is not a substitute for laboratory testing or medical advice.
• Speak to your GP if you are pregnant, breastfeeding, elderly, or taking supplements — interpretation may differ.

Performance & Helpful Info

• Measures 25-hydroxyvitamin D concentration from a finger-prick sample.
• Results in approximately 10 minutes.
• Reported test accuracy: over 95% compared to laboratory analysis.
• CE-marked for home self-testing in the UK/EU.

For borderline or low results, speak to your GP or pharmacist about further testing and vitamin D supplementation.
NHS guidance recommends daily supplementation during winter months for most adults in the UK.

FAQs

What does a low result mean?
It indicates possible vitamin D deficiency. Lifestyle, diet, or supplements may need review — discuss with your healthcare provider.

Should I stop taking vitamin D before testing?
No need to stop supplements, but note that recent high doses can temporarily raise blood levels.

Can children use this test?
It is designed for adults. Parents concerned about children’s vitamin D levels should consult a GP for appropriate testing.