If 85% of diabetic patients are correctly identified by a urine test for glucose, but 25% of non-diabetic patients are false-positives by this test, then the urine test for glucose has: a sensitivity of 85%, and a specificity of 75% a sensitivity of 25%, and a specificity of 85% a sensitivity of 75%, and a specificity of 85% a sensitivity of 15%, and a specificity of 25% a sensitivity of 75%, and a specificity of 15%

If 85% of diabetic patients are correctly identified by a urine test for glucose, but 25% of non-diabetic patients are false-positives by this test, then the urine test for glucose has: a sensitivity of 85%, and a specificity of 75% a sensitivity of 25%, and a specificity of 85% a sensitivity of 75%, and a specificity of 85% a sensitivity of 15%, and a specificity of 25% a sensitivity of 75%, and a specificity of 15%

Complete Textbook Of Phlebotomy

5th Edition

ISBN:9781337464314

Author:Hoeltke

Publisher:Hoeltke

Chapter9: Sample Considerations And Special Procedures

Section: Chapter Questions

Problem 3.1E

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Compared to the above urine test, a blood test for glucose is more accurate in avoiding both false positive and false negative results in identifying diabetic patients. If a blood test for glucose correctly identifies 90% of diabetic patients, but gives false-positive results for 12% of non-diabetic patients, then: the blood glucose test has improved sensitivity, but reduced specificity (compared to the urine test) the blood glucose test has improved neither sensitivity nor specificity (compared to the urine test) the blood glucose test has reduced both sensitivity and specificity (compared to the urine test) the blood glucose test has improved both sensitivity and specificity (compared to the urine test) the blood glucose test has improved specificity, but reduced sensitivity (compared to the urine test)
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