De or het diagnosecentrum?

The correct Dutch article is:

het diagnosecentrum

Rule Words ending in -um and -ium: usually het. See the rule

How to use diagnosecentrum

the diagnosecentrumhet diagnosecentrum
this diagnosecentrumdit diagnosecentrum
that diagnosecentrumdat diagnosecentrum
our diagnosecentrumons diagnosecentrum
your diagnosecentrumjouw diagnosecentrum
every diagnosecentrumelk diagnosecentrum
which diagnosecentrum?welk diagnosecentrum?
a big diagnosecentrum / the big diagnosecentrumeen groot diagnosecentrum, het grote diagnosecentrum