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. See similar questions...

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...

Clomid will not interfere with Fertile-Focus results, though it may intensify the appearance and duration of ferning. If you are taking Clomid, consult your physician for details. 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 or recently have been pregnant, or have reached menopause, you may get a misleading result. This may also be true if you are taking drugs or receiving injections that contain hCG or LH. LH also increases immediately after taking clomiphene citrate; the LH test device may be positive for a few days after the last pill, but the preovulatory LH surge has not yet occurred. Speak with your health care professional about when to start testing after taking clomiphene citrate. 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...

BioLife performs extensive screening tests on a sample of every single unit of plasma collected within our system.  Each plasma donation is thoroughly tested for various infectious agents including hepatitis B, hepatitis C and HIV, as well as testing for liver function. Laboratory technicians at our state-of-the-art testing facilities in Hoover, Ala., Round Lake, Ill. and North Brunswick, N.J. conduct more than 39 million tests each year. See similar questions...

According to the studies that have been performed, there are no known Lyme vaccines that interfere with this test.1 The Lyme portion of the SNAP 3Dx Test identifies the presence of a C6 antibody that is elevated only with active infection. Ehrlichia and heartworm do not have any known vaccination interferences. The SNAP 3Dx Test uses a synthetic peptide that specifically identifies Ehrlichia canis. The heartworm portion of the test detects specific antigens from adult female heartworms. 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 following table shows the restricted substances and their maximum allowed concentrations in each homogenous part of a product. 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...