High liver enzymes can be the temporary result of a recent drinking binge rather than a sign of cirrhosis. Graham Jones, Antony Barker. If your results fall outside the reference range, or if you have symptoms despite a normal result, you will likely need more testing. Your provider may recommend follow-up testing to find out if the result returns to within range or persists in being outside the range. Clear evidence-based guidelines on repeat testing are needed, to reduce the risk of false negatives. Myth:If all my test results are within range, I have nothing to worry about.. Negative. Understanding Laboratory Tests. Once you have been diagnosed, further testing for that diagnosed problem will usually yield relative results that are important to you. If the test result is positive, then, it indicates past or current H Pylori infection. The information on this site should not be used as a substitute for professional medical care or advice. If you did not have symptoms at the time of your PCR nasal swab, you may return to work in 10 days (provided you do not have a fever 3 days prior to return to work). For many tests, reference ranges include the values that are statistically analyzed and reported for the middle 95% of the reference population. WebStool tests can produce false positive and false negative results. Are my laboratory results normal? https://www.aarp.org/health/doctors-hospitals/info-02-2012/understanding-lab-test-results.html, https://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/InVitroDiagnostics/LabTest/default.htm, https://labtestsonline.org/articles/how-to-read-your-laboratory-report, https://labtestsonline.org/articles/laboratory-test-reference-ranges, https://middlesexhospital.org/our-services/hospital-services/laboratory-services/common-lab-tests, https://www.cancer.gov/about-cancer/diagnosis-staging/understanding-lab-tests-fact-sheet#q1, https://www.nhlbi.nih.gov/health-topics/blood-tests, https://www.bmj.com/content/351/bmj.h5552, https://www.uwhealth.org/health/topic/special/understanding-lab-test-results/zp3409.html#zp3412, https://www.uwhealth.org/health/topic/special/understanding-lab-test-results/zp3409.html, https://www.uwhealth.org/health/topic/special/understanding-lab-test-results/zp3409.html#zp3415, U.S. Department of Health and Human Services. A positive result means the test detected altered DNA and/or blood that could be caused by a precancerous polyp or colon cancer. A ONECARE MEDIA COMPANY. Accessed August 2015. Had a positive test result followed by a negative result. Your age, diet, hormonal cycles, physical activity level, alcohol intake, even a change of season can cause alterations in your body chemistry that will show up on a test result. This happens approximately 25% of the time. 2023 Exact Sciences Corporation. You may notice that the few, select reference ranges listed on this site apply only to adults, and there are, We want you to be informed, but we dont pretend to take the place of communication between you and your health care provider. Leukocytes in Urine: What Does Leukocyte Esterase in Urine Mean? Washington D.C.: AARP; c2015. While they do have to meet very high standards, they can be wrong sometimes. If youre waiting for lab test results to come back or youre trying to figure out what they mean, the process and all those medical terms and numbers can be confusing.
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