QuantiQuik™ Urea (BUN) Quick Test Strips
Datasheet PDF  MSDS/Bulk Order

Direct determination of urea concentrations in food and beverage samples as well as biological (e.g. urine, blood, etc.) samples.

Key Features
Fast and sensitive. Use of 20 µL sample. Semi-quantitative measurement between 0-1500 mg/L (undiluted) urea.

Convenient. No extra equipment required.

Sample treatment and assay can be performed in under 15 minutes.


Serum, plasma, urine, etc


Approximately 15 min

10 tests

Shelf Life
6 months

More Details
UREA, the major end product of protein catabolism in animals, is primarily produced in the liver and secreted by the kidneys. It is the primary vehicle for removal of toxic ammonia from the body. Urea determination is very useful for medical clinicians to assess kidney function of patients. In general, increased urea levels are associated with nephritis, renal ischemia, urinary tract obstruction, and certain extrarenal diseases (e.g. congestive heart failure, liver diseases, and diabetes). Decreased levels often indicate acute hepatic insufficiency, but may also result from over vigorous parenteral fluid therapy. BioAssay Systems' QuantiQuik™ Urea (BUN) Test Strips are based on Urease catalyzed conversion of urea to ammonium and carbon dioxide. The pH of the reaction medium is monitored by a chromogen and the intensity of the product color is directly proportional to the urea concentration in the sample. The QuantiQuik™ Urea Test strips allow for rapid and inexpensive quantitative determination of urea or blood urea nitrogen (BUN) and do not require sophisticated laboratory instruments.

1. What samples have you tested?

The strips have been tested on serum, plasma, urine, and milk samples.

2. My sample turns the strip very dark pink, how can I determine the urea concentration?

Very dark pink indicates that the diluted sample concentration is greater than 1500 mg/L Urea. To obtain a more accurate concentration, the sample should be further diluted and retested. For example, if the sample was tested undiluted, try diluting 5× or 10×.

3. I don’t have access to a pipetteman. How can I accurately measure out my samples?

We offer exact volume transfer pipettes as an accessory. For samples requiring a 2× dilution, order the 20 µL transfer pipettes (TP20). For samples requiring a 31× dilution, order the 300 µL transfer pipettes (TP300) and the 20 µL transfer pipettes (TP20).

4. Can I store unused reagents for future use?

Yes, unused reagents can be stored according to the assay protocol. The strips should be kept in a dry, cool location and protected from light.

5. The strip did not change color even though I know there is urea present in my sample. What is going on?

If the strip is still yellow, but is known to have urea present in it, this could mean that the sample was diluted too much and no longer can be detected by the strips. Another possibility is that something in the sample is interfering with the strip reaction. Samples that are very acidic may interfere with the strip reaction and should be greatly diluted or avoided if possible.

For more detailed product information and questions, please feel free to Contact Us. Or for more general information regarding our assays, please refer to our General Questions
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QuantiQuik™ Urea (BUN) Quick Test Strips
Catalog No: QQUREA10
Price: $49    Qty:
For orders of 10 or more kits, please contact us at 1-510-782-9988 x 1 for best pricing.

Shipping: RT
Delivery: 1-2 days (US), 3-6 days (Intl);
Storage: RT

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