ELISA test - nondiagnostic?

So just got a call from the nurse at my doctor's office saying that my ELISA test came back nondiagnositc and they are running additional tests on my bloodwork.  Does that mean it is negative?  Has anyone had that happen?  The nurse didn't know what that meant so wasn't very helpful!! Thank you!

I hda two negative elisas. It wasn't until a lyme literate dr ran a western blot did my lyme shlw up. In my opinion the elisa test is worthless most the time.