De or het transfusiedienst?

The correct Dutch article is:

de transfusiedienst

How to use transfusiedienst

the transfusiedienstde transfusiedienst
this transfusiedienstdeze transfusiedienst
that transfusiedienstdie transfusiedienst
our transfusiedienstonze transfusiedienst
your transfusiedienstjouw transfusiedienst
every transfusiedienstelke transfusiedienst
which transfusiedienst?welke transfusiedienst?
a big transfusiedienst / the big transfusiediensteen grote transfusiedienst, de grote transfusiedienst

Dutch words ending in transfusiedienst

bloedtransfusiedienst

In compound words, the last part decides the article. See the rule