If your test result shows two distinct coloured lines it means your vitamin D level is deficient (Ie. 0-25 nmol/L). This indicates that you may have problems regulating the amount of calcium and phosphate in the body which are two minerals important in maintaining good bone health.

What next?

It is recommended you consider taking a supplement (¹, ³). There are lots of different types of vitamin D supplement and your pharmacist will be able to recommend the best one for you.

During the summer and spring months, most people can make enough vitamin D by going out for short periods in the sun providing they have some skin exposed (e.g. forearms and lower legs). This might not be possible for some people, and you should always practice safe sun exposure, taking care not to burn in the sun.

To confirm your result, or to get an exact measurement of the level of vitamin D in your blood, you might want to consider taking a confirmatory blood test. This type of test is sent off to a laboratory for analysis and can give an accurate reading of your vitamin D levels. You can then take your results to a healthcare professional who will give you advice on what to do next.

When both coloured lines appear, but the ‘control’ (C) line is darker, it means your vitamin levels are insufficient (ie. 25-75 nmol/L).

What next?

Small changes to your lifestyle may help improve your vitamin D insufficiency.

It is recommended that if you are not already taking a vitamin D supplement, you should consider starting one. There are lots of different types of vitamin D supplement and your pharmacist will be able to recommend the best one for you.

During the summer and spring months, most people can make enough vitamin D by going out for short periods in the sun providing they have some skin exposed (e.g. forearms and lower legs). This might not be possible for some people, and you should always practice safe sun exposure, taking care not to burn in the sun.

You may want to consider taking a follow up test in 6 months’ time to monitor whether there has been any improvement in your vitamin D levels.

To confirm your result, or to get an exact measurement of the level of vitamin D in your blood, you might want to consider taking a confirmatory blood test. This type of test is sent off to a laboratory for analysis and can give an accurate reading of your vitamin D levels. You can then take your results to a healthcare professional who will give you advice on what to do next.

If your test results shows two lines, but only the colour in the ‘test’ (T) line is faint, it indicates your vitamin D levels is in the normal range (75-250 nmol/L), this is considered a marker of good health.

What next?

A sufficient level of vitamin D suggests your diet and lifestyle is at an optimum level for this vitamin. This may be because you are getting adequate exposure to sunlight or a supplement you are taking suits you well. Moving forward, ensure you’re practising safe sun exposure and speak to your pharmacist if you are considering changing your supplementation.

You may want to consider taking a follow up test in 6 months’ time to monitor your levels of vitamin D for any changes.

To confirm your result, or to get an exact measurement of the level of vitamin D in your blood, you might want to consider taking a confirmatory blood test. This type of test is sent off to a laboratory for analysis and can give an accurate reading of your vitamin D levels.

If only one coloured line appears in the control (C) line it indicates you have high levels of vitamin D. Extremely high levels of vitamin D, where levels are over 200nmol/L, can cause vitamin D toxicity (², ³). This can result in the body absorbing too much calcium.

What next?

Vitamin D toxicity is almost always caused by taking too many supplements (², ³). If you’re levels are too high, you should reduce the amount of supplement you’re taking in discussion with your doctor or a pharmacist.

You may want to consider taking a follow up test in 6 months’ time to monitor whether there has been any improvement in your vitamin D levels.

To confirm your result, or to get an exact measurement of the level of vitamin D in your blood, you might want to consider taking a confirmatory blood test. This type of test is sent off to a laboratory for analysis and can give an accurate reading of your vitamin D levels. You can then take your results to a healthcare professional who will give you advice on what to do next.

If a control (C) line fails to appear, it is likely there was an insufficient volume of specimen to test, or the incorrect testing procedure was followed.

What next?

We recommend that you take another test. If this problem persists, please contact our customer care team for further assistance.