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