Measurement of vitamin D in dried blood spots stored under different temperature conditions.
Mads NyboPalle N FruekildeKaren Andersen-RanbergPublished in: Annals of clinical biochemistry (2021)
We find that vitamin D measured in dried blood spot samples do not differ significantly from venous plasma measurements despite storage at different temperatures and freeze-thaw, which enables the use of dried blood spot in multicentre studies taking place under alternating temperature conditions.