What is it?

Urine analyzer is a medical device used to test urine samples. It is one of the most commonly used methods in the medical diagnostic process. It can reflect the severity and progression of diseases such as kidney and urinary tract. Today, urine test strips are most commonly used for a quick, easy and inexpensive urine test to determine the presence of red blood cells, white blood cells, proteins, nitrites, glucose and other substances in urine.

A urine analyzer generally consists of a test strip, a mechanical system, an optical system, a circuit system, an input and output system, etc.

There are several reagent pads with different reagents on the test strip, each of which reacts independently with the corresponding components in the urine to produce different colors, and the depth of the colour is proportional to the components being tested in the urine. Different types of urine chemistry analyzers have been developed with matching test strips for their own use.

How does a urine analyzer work?

The main function of the mechanical system is to transfer the test strips and samples to be tested to the detection area, and the analyzer will eject the test strips to the waste box after detection. Different types of instruments use different mechanical devices, such as gear combinations, transfer belts, mechanical arms, sampling needles, sample mixers, etc.

The optical system generally consists of three parts: light source, monochrome processor and photoelectric conversion. The light irradiates the surface of the reactant to produce reflected light, and the intensity of the reflected light is proportional to the reaction colour of each object. The reflected light of different intensities is converted into electrical signals by the photoelectric converter and sent to the amplifier for processing.

The circuit system amplifies the converted electrical signal, sends it to the central processing unit for processing after analogue-to-digital conversion, calculates the final detection result, and then outputs the result to the screen for display and to the printer for printing. The role of the CPU is not only to process the detection data, but also to control the organic operation of the entire mechanical and optical system, and to realize various functions through software.

The input and output system consists of components such as monitors, panels and printers. It is used for the operator to enter the sample information, observe the working status of the instrument, print the report and other functions.

How are urine analyzers calssified?

According to the working mode, it can be divided into wet urine analyzer and dry urine analyzer. Among them, dry urine analyzer is widely used in the clinic because of its simple structure and convenient operation.Dry urine analyzers generally judge whether there is a problem with the basic indicators of urine, focusing on qualitative analysis. The urine sediment instrument is an important reference index for measuring urinary tract infection, nephritis and other diseases. It analyses the components of urine, focusing on quantitative analysis.

According to the classification of test items, it can be divided into 8 items of urine analyzer: the test items include urine protein (PRO), urine sugar (GLU), urine PH, urine ketone body (KET), urine bilirubin (BIL), urine occult blood (BLD), urine nitrite (NIT); 9 items of urine analyzer: 8 items + Urine Leukocyte (LEU); 10 items Urine Analyzer: 9 items + Urine Specific Gravity (SG); 11 items Urine Analyzer: 10 items + Vitamin C; 12 items Urine Analyzer: 11 items + colour or turbidity.

According to the degree of automation, it can be divided into semi-automatic urine analyzer and fully automatic urine analyzer.

Perhaps you are asking if you can drink water before the urine test?

What I am trying to tell you here is that the only factor that affects a diluted sample is the amount of fluid consumed in the short period of time prior to providing the urine sample. If you see results that indicate you are close to diluting the sample, try to stop drinking any fluids 2-4 hours before providing the sample.

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