Can you have voluma injections while you are taking eliquis 5mg twice a day?

Yes, but you are going to be at a much higher risk for bruising which is already a common side effect with Voluma. If you can, I would recommend going off the blood thinner for a couple of weeks prior to your appointment. If you can't do this, make sure to let your injector know that you are taking a blood thinner as if may affect your post op protocol. 

Hello and Thanks for the Question.
As a facial plastic surgeon I am very mindful of anti-coagulation and the risk of bleeding. It is no different with fillers. I would be very cautious and advise individuals against fillers while on Eilquis or any other blood thinning agent. My main mantra is Patient Safety First. The risk of bruising/hematoma (blood collection) is much higher which may lead to complications. I recommend being off of any blood thinning agent for at least 2 weeks before any procedure, including filler, is performed. 
Good luck and I hope this helps!
Dr David