We have been informed this issue is isolated to this laboratory and does not involve the wider network including the IP5 laboratory in Newport that processes the majority of Welsh samples.
Rydym wedi cael gwybod bod y mater hwn wedi'i ynysu i'r labordy hwn ac nid yw'n cynnwys y rhwydwaith ehangach, gan gynnwys labordy IP5 yng Nghasnewydd sy'n prosesu'r rhan fwyaf o samplau o Gymru.