Leukocyte esterase in urine at 35w?

me

My OBGYN had me do some blood work and a urinalysis yesterday because of some headaches that I've been having and I get the results online from the lab I go to (lifelabs).

The results say "HI - 250" and ref should be negative.

My OB did not call me and I won't see her again until next Thursday. I also can't call because the office is closed now until Tuesday.

Since I didnt get a call, am I safe to assume it's not an infection?