In an outbreak setting, no. Previously vaccinated persons who are exposed to mumps will generally have existing, detectable serum IgG.

Mumps virus can cause illness with an acute onset of unilateral or bilateral tender, self-limited swelling of the parotid or other salivary gland, lasting 2 or more days, without other apparent cause. Clinical diagnosis of mumps may be unreliable, suspected cases of mumps should be laboratory confirmed. As with any disease, lab work should be used in conjunction with clinical presentation (signs and symptoms).

False negative results are more common than false positives - and are primarily due to inaccuracies in timing of the test or carelessness in the test procedure itself. Please follow test instructions with circumspection and precision. A false negative result can also stem from using a diluted urine sample and/or from taking a test too early in pregnancy. First morning urine contains the most concentrated presence of hCG - which makes it the ideal sample for pregnancy testing.

IgG stands for immune globulin G and IgM stands for immune globulin M. Both are types of antibodies. IgM is generally produced the first time a host is exposed to an antigen. IgM will eventually decline, and then the host produces IgG, which lasts much longer. Detection of IgM indicates acute or primary infection, IgG indicates past infection or immunity.

It is important to bear in mind that common diseases, such as atrial fibrillation and stroke, occur as a result of the interplay of both environmental (including lifestyle and other health and medical conditions) and inherited risk factors. As a result, having a specific genetic risk factor for a common disease does not mean that one will necessarily develop the disease; and not having a certain risk variant does not eliminate the possibility of developing the disease.

individual with two copies of the risk variants will receive a positive result for deCODE MI™, and those with only one or no copy of the risk variants will receive a negative result for the test. Back to top of page

It is very important to realize that because there are a number of risk factors of atrial fibrillation, including both genetic and lifestyle/health factors, receiving a negative result for the deCODE AF? test does not mean that one is at low or no risk of AF. Back to top of page

A positive RT-PCR signal indicates the presence of mumps viral RNA. The positive result should be used only to support a clinical diagnosis of mumps since persons recently immunized against mumps may have limited viral shedding following vaccination.

If an office assessment has not already been done, determine immunity of the office and medical personnel. This includes documentation of two doses of MMR or a positive mumps IgG. Administer MMR as needed. Susceptible personnel who have been exposed should be kept from direct patient contact from the 12th day after the first exposure through the 26th day after the last exposure. IDPH invites you to use the Health Care Worker Assessment tool in your hospital or office assessment process.

With Autosomal Dominant PKD, the only form of PKD so far identified and confirmed in cats, two genetic negative parents cannot produce a genetically positive offspring unless that offspring is a fresh mutation. See the discussion on autosomal-dominant inheritance below for further details.

It is possible to get a false positive test result. This happens when a doctor or laboratory has not performed a confirmatory antibody test before giving people their results. When a person has an antibody test, the lab usually runs two different kinds of tests. One is called an EIA test which is highly sensitive. It can sometimes overreact, so a positive result with the EIA is usually followed up with a RIBA test which is a sophisticated, highly-specific, antibody test.

A positive test result may mean that your dog has bladder cancer. However, there are conditions other than bladder cancer that can cause a positive result. A positive test result will be used in conjunction with signs, symptoms, and possibly other diagnostic tests such as ultrasound to make a definitive diagnosis for your dog.

A positive result indicates that the drug concentration is above the indicated cutoff level. A secondary analytical method must be used to obtain a confirmed result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method.