Sentences with phrase «false negative results during»

Not exact matches

After adjusting for common factors that influence breast cancer risk, Henderson and colleagues found that women whose mammograms were classified as false - positive who were referred for additional imaging had a 39 percent increased chance of developing subsequent breast cancer during the 10 - year follow - up period, compared with women with a true - negative result.

Errors during collecting, storing or testing urine samples may cause false positive or negative results [6].

However, it usually takes eight to 12 weeks after infection for detectable levels of antibody to appear in the bloodstream, so testing performed during this interval may result in false negative results.