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How Accurate Are Bilirubin Tests
Bilirubin is the potentially toxic product of heme metabolism. It is formed by breakdown of heme present in hemoglobin, myoglobin, cytochromes, catalase, peroxidase and tryptophan pyrrolase. Eighty percent of the daily bilirubin production comes from hemoglobin. It requires conversion to a water-soluble form before elimination from the body by ...Read more
Depends: Home pregnancy tests measure the amount of beta human Chorionic Gonadotropin hormone in urine. It takes about 1 week after conception for beta HCG to become detectable in the blood and 2 weeks for it to become detectable in urine. If it has not been 2 weeks since your missed period, your home pregnancy test may be falsely negative. ...Read moreSee 1 more doctor answer
Depends: The results of the allergy skin test are interpreted in 20 minutes after they are placed, so you have that information right away. Allergy blood tests (specific ige) usually takes a few days or up to a week depending if the blood sample is processed in the lab or sent to a reference lab in a different city. ...Read more
It varies: Ovulation prediction kits are one predictor of ovulation. Others are menstrual cycle length, pain at ovulation, vaginal and cervical fluids. Ultrasound is a great way of detecting ovulation. If everything looks good, ovulation has probably occurred, but the only real test is whether you get pregnant. ...Read moreSee 1 more doctor answer
Accurate: We pathologists are focused on labs. In testing for B12 deficiency, we're looking largely at the ability to absorb it, and perhaps at its absence in the diet (even modest vegetarians are prone to be low). A non-fasting serum B12 in the normal range would reassure me and i'd not ask for a repeat fasting. ...Read more
It all depends: Lab tests are used to confirm what the history and physical exam suggest. Many forms of arthritis cannot be diagnosed with blood tests. Blood tests are most helpful when they are relatively specific for one type of arthritis, for example the ccp antibody in ra. ...Read moreSee 1 more doctor answer
Depends on the test: So we have a couple of tests.One is a polymerase chain reaction test (PCR) for herpes that we get when we scrap the lesion.Another test is a blood test that detects the body's antibody response to an infection by the Herpes Virus.Regarding the PCR test it is very accurate but it depends on getting a good DNA sample from the scraping.The blood test depends on the antibody response time. DNA better. ...Read more
Can't answer: Question fully. a baseline test shows what your level or whatever is being measured is at a point in time. This would be your baseline. To tell you how accurate the test is would need to know what the test is. ...Read more
It depends: What is your idea of "accurate"? The lab test results need to be interpreted in the context of the clinical condition. Different tests have different sensitivity, specificity and predictive values. These characteristic vary with the population under consideration, e.g., the HIV screening tests have different performance when used on drug addicts vs. Observant nuns. ...Read more
Accurate: Urine pregnancy tests bought from a drugstore in the U.S. Are quite accurate. They give a reliable result, if done correctly, about a week after missing a period (or 3 weeks after sex). If a woman wants to be extra certain, she can buy 2 different brands of tests and see if they give the same result. ...Read more
Pretty accurate : It's always a good idea to get it confirmed by your doctor but they are pretty similar to the ones we use in our office. That said I am suspicious of some if the really cheap ones out there. ...Read more
Depends: Lab tests need be evaluated in term of sensitivity, specificity and predictive value. Some of these parameters depend on the population being tested. Home tests are generally accurate, provided the testing is performed strictly according to the instructions of the manufacturer. Home tests are generally screening tests and often require confirmation with a test in an accredited laboratory. ...Read more
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