We use cookies to help us improve the website and your experience using it. You may delete and block all cookies from this site at any time. However, please note this may result in parts of the site no longer working correctly. If you continue without changing your settings we will assume you are happy to receive all cookies on this site.

Close

Change of units for vitamin A and E

There will be a change to the units in which vitamin A (retinol) and vitamin E (tocopherol) are reported from July 12, 2013.

These vitamins will no longer be reported in mg/L but will be reported in μmol/L.

To convert back from μmol/L to mg/L for comparison with previous results use the following conversion factors:

Vitamin A : μmol/L to mg/L x 0.286

Vitamin E : μmol/L to mg/L x 0.431

Please remember samples for vitamin analysis should be collected in tubes without anticoagulant (serum) and ideally protected from light.