False. In an ionic compound, the positive ion (typically a metal) is usually named first, followed by the negative ion (typically a nonmetal).
False. The most abundant negative ion in extracellular fluid is chloride, not calcium. Calcium is usually found as a positively charged ion in extracellular fluid.
Poor specificity would likely cause a false positive reaction between an inoculating loop and hydrogen peroxide, as this would indicate a non-specific reaction occurring. In contrast, poor sensitivity would not directly cause a false positive in this context, rather it may result in a false negative if the test is not able to detect the presence of a specific target.
Deodorant or hairspray typically do not contain alcohol in amounts significant enough to cause a false positive on an alcohol blood test. However, using an alcohol-based mouthwash shortly before a test could potentially lead to a false positive due to the alcohol content.
False readings in hair drug testing can occur due to external contamination from drug residues in the environment or from cosmetic products. However, if you know you have been using drugs and get a negative result, it could be due to various reasons such as low drug concentrations or drug use occurring outside the detection window of the test. It is essential to follow the proper specimen collection and testing protocols to minimize the risk of false readings.
Promethazine (Phenagren) can cause a false negative.
Can atenolol cause a false negative
BV won't cause a false negative on a pregnancy test.
No
Yes. Antihistamines can cause a negative result
No. Taking the test too soon causes false negative.
No. The only thing that will cause a false negative on a HPT is testing too early. See your DR for a blood test.
No it can not.
can atenolol cause a false negative on a pregnancy test
Some infections in the kidney can cause false positive dipstick test results but not false negative.
no way!
Urinating within hours of the urine or swab test, not using the first urine that comes out, or inadequate swabbing can all cause a false negative chlamydia test. In addition, testing too soon after exposure, or recent exposure to partially effective antibiotics could cause a negative test that would be positive within a couple of more weeks.