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Lower one third of urethra (the last tube leading urine stream from bladder to outside) and the epithelium lining the vagina in a woman are lined by flat cells known as squamous epithelial cells. All cells in the body are shed off regularly and at higher rate when there is infection or inflammation.

In a woman the urine samples usually get contaminated by a little of vaginal secretions which has abundant squamous epithelial cells.These cells are shed in small numbers in men.

When urine is examined these cells if present are identified and reported usually as +. ++. +++ etc depending upon their numbers.

By themselves they are not diagnostic but help in deciding about the extent of vaginal contamination in urine samples for culture in women.

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16y ago

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