How accurate are urine dip sticks? Did one at Dr office and showed protein in urine. Can it mean uti? Dr taking it to lab for culture.

Quite accurate. Trace protein in the urine is never worrisome by itself. +1 may be worth a workup. +2 is worth investigating. The usual cause is orthostatic proteinuria -- if you're well otherwise, see if your first-voided morning specimen is free of protein, and if it is, you know you're someone who gets proteinuria from standing up -- no big deal. Best wishes.