Urine protein dipsticks are semi-quantitative and are influenced by urine pH, volume, concentration and color. While it is very easy to perform, the urine dipstick is neither a sensitive nor specific indicator of urinary protein loss. The lower limit of detection for urine protein on a dipstick is 30 mg/dL. The IDEXX Urine P:C Ratio has a lower limit for urine protein of 5 mg/dL, and is highly specific for dog and cat proteinuria.

No, the urine dipstick tests are not sensitive, nor specific enough for routine screening for pre-eclampsia. There is more to the story, though. See below. (WORD 71k)

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

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.

A negative test result means that no HIV antibodies were found in your sample. This usually means that you are not infected. There is a small chance that you may be infected, even if you tested negative. It can take three (3) to six (6) months after a risky behavior for the test to become positive. To be sure, you must be retested at least six (6) months after you have had any risky behavior.

These products are shipped with a two day delivery with blue ice. If their ship date is less than three days prior, no preliminary testing is needed. If that period is longer, we recommend that you check for turbidity, make sure there is no precipitate present by inverting product several times, and run the controls to see if you get the expected results. If the control falls out of range, discontinue use.

P:C is a standard metric for chronic renal disease. Here are the details in the OB setting (WORD 400k)

Lola, Utah, USA: Yes, some elevated hCG levels can be due to other factors besides GTD or recurrent trophoblastic disease. Certain hormone fluctuations and proteins in the blood may interfere with blood test results. Both tests should be requested, especially in initial diagnosis of GTD, as well as diagnostic testing for suspected GTD, before any invasive treatment recommendations are pursued. Lola, Utah, USA: GTD is diagnosed and followed by measuring hCG hormone in the blood and urine.

You've been tested for Tuberculosis and the test site on your arm is clear. You do not have Tuberculosis, right? Not necessarily. Some people have a negative reaction to the tuberculin skin test even when they have a Tuberculosis infection. Find out if you could have a false-negative Tuberculosis skin test result.

A woman who has a negative ECM (enriched culture medium) or PCR (polymerase chain reaction) test result at 35 plus weeks of pregnancy does NOT need to be offered intravenous antibiotics in labour to prevent GBS infection in her baby (but antibiotics may be indicated for other reasons) .

Yes, this happens when the person tested may have an early infection. He or she may not have developed antibody levels high enough that the test can measure. In addition, some people may lack the immune response necessary for the test to work well.

Instant Technologies, Inc. strongly recommends that a SAMHSA certified laboratory confirm all non-negative results. Please call us directly for assistance.

It is still recommended that the plasma metanephrine test be performed to confirm or eliminate the diagnosis of pheochromocytoma, particularly if the symptoms are episodic. The 24 hour urine tests are not always successful at picking up intermittently secreting tumors. Symptoms vary greatly with each patient. Sterotyped textbook cases of Pheochromocytoma are rare. Symptoms can include:

It is good news. It means that the level of uranium in your body now is no higher than would be expected from normal intake from natural sources (food, water, and air). It does not mean you were never exposed to DU. It simply means that you have a normal level of uranium in your body now. WASHINGTON (Reuters) - Environmentalists and arms control activists call it a modest proposal -- a kind of Year 2000 insurance policy for the world. Power down the 433 nuclear reactors worldwide.

This is the #1 question people have when they are considering a raw food diet. People think that protein comes only from meat, dairy or at least soy, and that without eating at least some of those foods, they won't get enough.. As a matter of fact every living cell contains protein: every plant cell has protein as a basic constituent in its cytoplasm. Vegetables contain protein! Seeds and nuts obviously contain proteins. Seaweeds and algae are very rich sources also.

If you have tested negative, this means that no antibodies against HIV have been found in your blood at the moment of testing. Similar to a test at the laboratory, it is not necessary to do a confirmatory test. Potential risks of infection within the past 3 months should be taken into account, because there is a chance that your body has not produced a sufficient amount of antibodies. In such a case, the test might give a negative result.

A negative result is represented by a line in the control or "C" zone and a line in the testing or "T" zone.

If the test is work-related, then it is a red flag. It probably means your employer or prospective employer has a philosophy of non-drug use at the work place. If the job involves operating heavy or moving machinery, there is even more of a concern as many drugs can put yourself and others in danger.

Yes, depending on the prescription medication. However, drug tests are typically conducted to determine recent use of an illegal drug, or misuse of a prescription drug. Results will be evaluated with respect to proper use of valid prescription medications that could be the cause of a non-negative drug test. If you use/used a valid prescription for the drug, the employer or their designated Medical Review Officer may evaluate this before declaring your results as non-negative.

Phentermine is similar chemically to Amphetamines, it may cause a positive result in urine screening tests for Amphetamines.

Atkins Diet, Protein Intake, and CholesterolHigher protein intake doesn't increase blood cholesterol levels. What does increase cholesterol levels is the "mixed" high carbohydrate, high fat eating style. Long term clinical trials revealed that the expectations regarding cholesterol-lowering effects of low fat diets were not met.

Yes. Persons with early infection may not as yet have developed antibody levels high enough for the test to measure. In addition, some persons may lack the (immune) response necessary for the test to work well. In these persons, research-based tests such as PCR may be considered.