Re: CE marking: RTTE directive & IVD Directive
If your product is an IVD, then IVD Directive is "THE" Directive, you must comply with and draw an EC DoC following the IVD directive. If blue tooth technology is involved, then appropriate Directives are to be followed as part of conforming to the Essential principles (EP) of IVD Directive. Similarly, if your product requires to follow the Low Voltage (LVD or Product Safety) and EMC Directives, your appropriate EP must comply with those directives.
For the case of EMC and LVD, you have to have a technical file for that directive to submit to the testing services lab to get the Safety markings on your product label. But to the European Notified Bodies, you will submit the European Technical File to comply with the EP of IVD Directive to obtain CE Marking. So the Bluetooth/LVD/EMC Directives (or technical files) will be sub-set of your EU PRODUCT (IVD) TECHNICAL FILE.
Hope this helps!