HCG levels

Shari

I am worried because on Wednesday my levels was 319 then I was told to come back to the hospital today or go to my doctors to get my blood redrawn I decided to do both because I didn’t want to wait to get the results from the doctors so the ones at the doctors was 594 in the one at the hospital was 589. Does that mean on Miscarrying or could two different labs have two different results