What does a reagent test strip test in urine?

What does a reagent test strip test in urine?

Diagnostic reagent strips are commonly used in clinical analysis of urine and blood, in particular for monitoring glucose concentration. Results are obtained instrumentally or visually as thresholds and quantitative outputs.

What are normal urine test results?

Normal values, depending on diet, range from about 5 to 7, where values under 5 are too acidic, and values over 7 are not acidic enough) Protein (not usually found in urine) Sugar (glucose, not usually found in urine) Nitrite (not usually found in urine)

What diseases can be diagnosed by testing urine?

It’s used to detect and manage a wide range of disorders, such as urinary tract infections, kidney disease and diabetes. A urinalysis involves checking the appearance, concentration and content of urine. For example, a urinary tract infection can make urine look cloudy instead of clear.

What substances give false positive results with the reagent strip test for blood?

A false-positive result for blood on the urine reagent strip can occur if the collection container or reagent strip is contaminated with oxidizing agents, such as hypochlorite (bleach) or if the specimen is contaminated with povidone-iodine, a strong oxidizing agent used in surgical procedures.

What are 4 types of tests done on urine?

Red blood cell urine test. Glucose urine test. Protein urine test. Urine pH level test.

What are the 4 parameters test of reagent strip?

URS 4 Parameters:Protein, pH, Blood, Glucose , 100 Strips/Bottle.

What should you not do before a urine test?

– Avoid alcohol, coffee, tea, tobacco and strenuous exercise for 24 hours prior to collection and up to collection time. – Do not consume avocados, bananas, eggplant, pineapples, plums, tomatoes or walnuts for 48 hours before the test.

What indicates a UTI on a dipstick?

If dipstick is positive for nitrite or leukocyte and red blood cells (RBC) UTI is likely. A urine sample (morning sample most reliable) for culture and sensitivities should be sent if previous antibiotic treatment has failed or there is a possibility of antibiotic resistance.

Do all infections show up in urine tests?

WEDNESDAY, Nov. 13 (HealthDay News) — When doctors suspect a patient has a urinary tract infection, they often request a urine sample so they can test for the presence of bacteria. Now, new research suggests this step may be unnecessary.

What can cause errors in reagent strip testing?

Interferences: If excess urine is left on the reagent strip, a phenomenon known as runover may occur. The urine from one reagent area carries reagent onto the pH test area and changes the result erroneously. Notes: In animals, usually carnivores have more acid pH versus herbivores with more alkaline pH.

What is the most common cause of false negative reagent strip tests?

False negative reagent strip results may occur if urine contains large amounts of ascorbic acid. False positive results may be seen if povidone iodine solutions are rinsed into urine before testing.

How do you read UTI test strips?

Directions: Simply wet one test strip by holding it in your urine stream for 1-2 seconds. Read result at 1 minute for Nitrite and at 2 minutes for Leukocytes. Match the color of the test strip pads to the color blocks on the foil pouch.

What is the principle of the reagent strip test for pH?

It is based on the Griess’ test principle. In an acidic medium, Nitrite in the urine reacts with p-arsanilic acid to form a diazonium compound. The diazonium compound in turn couples with 1 N-(1-naphthyl)- ethylenediamine to produce a pink color.

What are the 10 urine strip parameters?

Test for 10 different parameters such as: leukocytes, nitrile, urobilinogen, protein, pH, blood, specific gravity, ketone, bilirubin and glucose in the urine.

When’s the best time to take a urine sample?

You can collect a urine sample at any time of day, unless your GP or practice nurse advises you otherwise. The types of urine sample you might be asked for include a random specimen, first morning specimen or timed collection.

How long before a urine test should I drink water?

The only thing that affects a dilute sample is the amount of fluid taken in within a short period of time prior to providing the urine sample. If you are seeing results that show you are getting close to a dilute sample, try to stop drinking any fluids 2-4 hours prior to providing the sample.

What does it mean if your urine tests positive for leukocytes?

Leukocyte esterase is a screening test used to detect a substance that suggests there are white blood cells in the urine. This may mean you have a urinary tract infection. If this test is positive, the urine should be examined under a microscope for white blood cells and other signs that point to an infection.

How do I know if I have UTI by test strips?

You wet a test strip by holding it in your urine stream for a few seconds. Or, you can collect urine in a clean cup and dip the strip into the sample. Wait 1 to 2 minutes for the color of the test strip to change. This will vary depending on the brand you use.

What is a silent UTI?

“Our compromised elders, especially females often develop, “silent” urinary tract infections. These UTIs are called “silent” because they usually have no symptoms of pain, no burning, no odor, no frequency, etc. BUT there will often be profound changes in behaviors.”

What is the principle behind test strips?

Traditional reagent strip testing for protein uses the principle of the protein error of indicators to produce a visible colorimetric reaction.

What are the possible source of errors during urine sample collection?

Sources of Errors in the Collection of Urine

1. Bacteriologically or chemically contaminated specimen. 2. Wrong type/amount of preservative.

What color is a positive UTI test?

It is used as an aid in the screening of urinary tract infection (UTI). The test is a firm plastic strip onto which Leukocyte and Nitrite test pads are attached. If the test is positive, the Leukocyte test pad should be beige to dark purple, and the Nitrite test pad should be uniform pink to red.

What is a positive UTI test?

When this test is positive, it may indicate that there’s inflammation in your urinary tract or kidneys. The most common cause for white blood cells in urine is a bacterial urinary tract infection (UTI). Urine specific gravity test: A specific gravity test shows the concentration of all chemical particles in your urine.

What are the 4 parameters urine strips?

4 Parameters (Glucose + Protein + Ketone + pH)
Urine strips for the semi-quantitative estimation of Glucose, Protein, Ketone and pH. Most of the routine samples of urine analysis require detection of renal status of patients.

What indicates a urine infection on a dipstick?

The dipstick checks for leukocytes, nitrites and traces of blood. The presence of leukocytes and blood in the urine sample indicates a possible infection, whilst the detection of nitrites points to the presence of bacteria.