Work-up/reporting of urine samples based on colony count/clinical information/number and type of organisms:
108 cfu/L - significant indication of urinary tract infection
107 cfu/L - significant with signs/symptoms. Lab will work up 1 or 2 organisms at this colony count if relevant diagnosis.
106 cfu/L - low colony count - may be significant in females with pyuria/dysuria syndrome. Lab will work up if pure uropathogen and history provided.
≥ 3 organisms - mixed-probable contamination. Lab will work up if a uropathogen > 80% predominant.