either [on two occasions not more than 12 months apart in a serological test (6) carried out in an approved laboratory on samples of blood taken prior to and not less than 21 days following collection for this consignment of semen.]
The example sentences [G] were kindly provided by the Goethe Institute. Sentences marked by [EU] derived from DGT Multilingual Translation Memory. The European Commission retains ownership of the copyright in the original data.