Combur test for urinalysis

The Combur Test urine strips are the most widely used test strips for urinalysis worldwide. The strips are a useful tool for the immediate investigation, diagnosis and screening of various diseases. Reliable and accurate results are important, with the Roche Combur strips you are assured of this. The most famous Combur strips are the Combur 7 Test, Combur 10, Combur 3, Combur 3 E and Combur 9 strips.

On this page you will find an explanation of the different urine strips, how to use and interpret the strips and which values you can measure.

Order Combur test strips

If you want to order the Combur Test strips, you can visit our webshop for the following strips:

    • Combur 3: protein, glucose, pH
    • Combur 3 E: protein, glucose, blood
    • Combur 7 Test: protein, glucose, nitrite, blood, leukocytes, pH, ketones
    • Combur 9: protein, glucose, nitrite, blood, leukocytes, pH, ketones, bilirubin, urobilinogen
    • Combur 10: protein, glucose, nitrite, blood, leukocytes, pH, ketones, bilirubin, urobilinogen, specific gravity

We usually have the urine strips available from stock.

Overview Combur Test Strips

The Combur urine strips are available in different versions, each with a different combination of values. The strips are easy to read thanks to the clear color scale.

Below is a list of the different Combur urine strips and the corresponding values that can be measured:

TypeGlucoseProteinpHBloodNitriteKetonesBilirubinSpecific gravityLeukocytesUrobilinogen
TypeGlucoseProteinpHBloodNitriteKetonesBilirubinSpecific gravityLeukocytesUrobilinogen
Combur 2 LNxx
Combur 3xxx
Combur 3 Exxx
Combur 4 Nxxxx
Combur 5 HCxxxxxx
Combur 6xxxxx
Combur 7xxxxxxx
Combur 9xxxxxxxxx
Combur 10xxxxxxxxxx
Combur 10 UXxxxxxxxxxx

How to use Combur urine strips

    1. Collect a urine sample in a clean and dry urine cup (possibly with a lid)
    2. Open the packaging of the Roche Combur urine strips and use it within the expiration date.
    3. Hold the test strip by the ends and immerse the reagent zone of the test strip in the urine for approximately 1-2 seconds.
    4. Remove the test strip from the urine cup and wipe off the excess urine on the rim of the container.
    5. Place the test strip on a flat surface and wait for 1 minute, now the colors are completely discolored and you can interpret the result.
    6. Compare the colors on the test strip with the color chart on the package. Hold the test strip pointing downwards for correct interpretation.

Combur Test 3
Combur Test 3 Urinestrips

Remember never to touch the test area of the strip with your fingers! This can affect the results, if you accidentally touch it, we advise you to grab a new test strip.

What parameters can the Combur strips test for?

  • Glucose: to determine if sugar is present in the urine. The presence of glucose can indicate, for example, urinary tract infection, gestational diabetes and diabetes mellitus (diabetes).
  • Bilirubin: To detect liver disorders, the presence of bilirubin is usually caused by a disorder of the liver. Another cause is a blockage in the bile ducts.
  • Ketones: often associated with diabetes but can also have other causes such as an overactive thyroid gland, fever or heavy physical exertion.
  • Specific weight: to determine whether the urine is diluted or concentrated.
  • Blood: to look for blood cells in the urine, which may indicate an infection or kidney disease.
  • pH value: to determine whether the urine is acidic or basic. This may indicate, for example, a urinary tract infection or diabetes mellitus.
  • Protein: to determine whether there is too much protein in the urine, which may indicate, for example, kidney disease, preeclampsia or inflammation of the urinary tract.
  • Urobilinogen: An increased presence of urobilinogen in the urine may indicate jaundice.
  • Nitrite: to determine if bacteria are present in the urine, which may indicate a urinary tract infection.
  • Leukocytes: this may indicate, for example, a urinary tract infection.
  • Endrocytes: these are red blood cells and an increased concentration of these in the urine can indicate, for example, a urinary tract infection, kidney stones, diabetes, kidney failure or haemophilia.

By testing these parameters, a urinalysis can give an indication of the patient’s general health and detect any abnormalities. Based on the result of the Combur Test, further investigation may be required.

Would you like to read more about which values can indicate bladder infection? Read more via the following link: bladder infection

Background info Roche Combur Test

The unique construction technology of the strips prevents interference from components such as glue and largely eliminates the interference of ascorbic acid, resulting in excellent results. Low false negatives minimize testing time and increase cost efficiency. The Roche Combur Test strip technology provides an immediate and reliable result that remains largely unaffected by ascorbic acid in the sample. It reduces unnecessary retesting and helps prevent false negative results for glucose and hemoglobin by applying an iodate-impregnated gauze layer to the strip.

How does a Combur test work?

A color change on the strip makes the smallest pathological deviations and/or changes visible. Roche’s Combur test is the most commonly used urine strip for rapid analysis of urine for pathological abnormalities.