A control test in the presence of boric acid enables spurious fluorescence to be determined (by the formation of a boric acid/dehydroascorbic acid complex) and the fluorimetric determination to be deduced.
S kontrolnim testom v navzočnosti borove kisline lahko določimo lažno flourescenco (tvorba borove kisline/kompleksa dehidroaskorbinske kisline) in opravimo fluorimetrično določitev.