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Urinalysis and false positives

10 years 5 months ago #18014 by Patricia
Wierd huh...and its about a $5.00 test!!...My ob/gyn found mine...my internist did not do them!! Pat

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10 years 5 months ago #18010 by fearandfight
What really bugs me is with my insurance is before I got BC if I went for a physical a simple urine test is not covered by my insurance and I think most insurance companies are like this ??? ??? ???. Joe

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10 years 5 months ago #17994 by Landon
I know that before I had my first Cysto I had 2 cytology reports come back negative. Of course once the Cysto and TURB were done, they proved otherwise. Superficial Non-invasive Grade 1 Stage 1 Cancer. Glad the cysto was done!

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10 years 6 months ago #17929 by Patricia
This written by Dr. Steinberg at the U. of Chicago
Urine cytology

Perform urine cytology at the same time as cystoscopy, although its routine use for screening is controversial.
Urine cytology is associated with a significant false-negative rate, especially for low-grade carcinoma (10-50% accuracy rate).
The false-positive rate is 1-12%, but it has a 95% accuracy rate for diagnosing high-grade carcinoma and CIS.
The sensitivity of urine cytology can be increased by obtaining a bladder barbotage cytology (70%) as opposed to a voided cytology (30%).
With a normal finding on cystoscopic examination, further evaluate a positive cytology result on urine study with an upper-tract study and random biopsies of the bladder. Obtain biopsy samples of the prostatic urethra in men

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