Specifically, caffeine is a problem both directly and indirectly. Acetaminophen or any drugs containing acetaminophen can be a problem. No other medicinal source of interference has been identified. Clonidine or its metabolites show up in the chromatograms but they aren't a problem. Again, listing these interferences is best left up to the individual laboratory responsible for the test being performed. If the patient is not given a list of known interferences, be sure to insist on having a copy.

First, the free metanephrines are produced continuously within pheochromocytoma tumor cells from catecholamines leaking from storage vesicles within the cell cytoplasm. Thus, these metabolites are produced independently of catecholamine released by tumors. This has advantages since catecholamine release can be episodic or relatively non-existent in some pheochromocytomas. Second, metanephrines commonly measured in urine are different metabolites. See similar questions...

Regulations require routine monitoring for approximately 75 chemical or radiological substances. Our water is routinely tested for over 170 substances. In addition regulations require routine monitoring for bacteria in the distribution system. See similar questions...

Many drugs can potentially interfere with assays of catecholamines and any other substances, but this often depends on the method and laboratory. One facility can have machines and equipment that vary from that being used by another facility. Also, whether it is a problem or not depends on the level of expertise and competency of the operator running the assay. Caffeine, vanilla, vanilla extract, and bananas are known problems for urine testing. See similar questions...

The only medications that can cause a false positive on a home pregnancy test are those than contain hCG itself. If you are taking fertility medications with hCG - e.g. Novarel, Profasi, Pregnyl - please consult your doctor regarding appropriate times and circumstances for using our tests. Other fertility drugs and medications that do not contain hCG will not precipitate false positive results. Similarly, progesterone will not cause a false positive as well. See similar questions...

Testing results indicate a sensitivity of 99% compared to 63% for VMA and 83% to 85% for urinary or plasma catecholamines. See similar questions...

Women have white stains in their underwear almost every day of the week that have nothing to do with sex. It's a normal cleansing action of the female body and it's why CheckMate was created, so that men could finally have a way to find out the stain is nothing if it is in fact nothing - instead of needlessly damaging or destroying their relationship for absolutely no reason. See similar questions...

Proper test procedure requires that the subject have nothing in their mouth for 10 to 15 minutes prior to testing. If the subject has anything with alcohol in their mouth just prior to testing, the alcohol in their mouth will contaminate the test, giving an artificially high reading. However, 15 minutes is sufficient time for all mouth alcohol to be dissipated. See similar questions...

If you are actually pregnant, have recently been pregnant, or have reached menopause, you may get a misleading result. Any prescription drug or plant extract that artificially changes the estrogen level will affect your Luna readings. Please consult your health care provider to determine what affect these drugs may have. See similar questions...

It is also known as blood sugar test. This 3-minute test can show early identification of abnormal plasma glucose concentration, which can be a sign of diabetes or other medical problems. See similar questions...

Clomid will not interfere with Saliva Ovulation Test results, though it may intensify the appearance and duration of ferning. If you are taking Clomid, consult your physician for details. See similar questions...

Although we have made the operation of our testers quite simple and automatic, the testers include advanced setup features to satisfy the most demanding users. However, some operators may set it up wrong or misinterpret the results. For example, if one operator sets the tester at a partial test of 16Mx64, another operator may be confused to see a 16Mx72 module tests at %16Mx64. This operator may not be aware that the "%" prefix indicate a setup for partial tests... See similar questions...

The substances are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls , and polybrominated diphenyl ethers. This includes both metals and compounds of lead, cadmium and mercury. The RoHS Directive sets maximum concentration levels allowable of these substances in the "homogenous materials" of electrical and electronic equipment covered by the legislation. See similar questions...

A plasma is a state of matter, like a liquid or a gas. A plasma is like a gas in that the atoms are not constrained to a constant volume by chemical bonds. However, in a plasma the atoms are also ionized, meaning that the electrons have enough energy to escape their nuclei. Plasmas are extremely common in space, but can also be found on earth. Lightning is the ionization of air between a charged cloud and ground. See similar questions...

The TSC program runs as a Low Priority process, using only idle cycles of your CPU. This means that it is designed to run in the background, and will yield CPU cycles to other applications. It will not interfere when you're using your PC for other things. See similar questions...

Yes, the ATA conducts random drug tests at inspections. All substances forbidden by USEF and/or CEF are also prohibited by ATA. Please check their websites for a list. See similar questions...

Yes. On November 8, 2002, CMS issued a Program Memorandum to Intermediaries and Carriers on "Levocarnitine for use in the treatment of Carnitine Deficiency in ESRD Patients," which contains the payment instructions for intravenous levocarnitine for ESRD Patients. The program memorandum applies to all fiscal intermediaries and is effective as of January 1, 2003. See similar questions...