[Dr. Deleto]

make 4 skins for it in lr3d.

Skin1 needle - actual moh skin for it like you have it already.
Skin2 Base - moh skin whateva ya like.
Skin3 glass - blank alphad tga for moh skin maybe with a reflection effect(this is the glass part of the syringe)
Skin4 liquid - waved mesh with blue water colored moh skin.

I hope you get what I'm sayin here bruno. when I say skin above I mean l3rd mesh. moh skin would be the actual tga or jpg your skinning the model with. I'll get with ya on msn, maybe I can help.