The level of sugar for assessing the state and control of glycemia is determined by a special device. Testing is conducted at home, avoiding frequent visits to the hospital.
To select the desired model, you need to familiarize yourself with the types, characteristics and principles of operation.
Types of instruments for measuring
Invasive and non-invasive measuring devices are used to control sugar levels. They are used in medical institutions and are widely used at home.
Invasive blood glucose meter - a device for measuring indicators using finger pricking or other alternative places.
Modern equipment also includes a puncture device, spare lancets and a set of test strips. Each portable blood glucose meter has a different functionality - from simple to more complex. Now appeared on the market express analyzers, measuring glucose and cholesterol.
The main advantage of invasive testing is close to accurate results. The error range of the portable device does not exceed 20%. Each package of test tapes is assigned an individual code. Depending on the model, it is installed automatically, manually, using a special chip.
Non-invasive devices have different research technology. Information is provided by spectral, thermal, tonometric testing. Such devices are less accurate than invasive. Their cost is usually higher than the prices of standard devices.
The benefits include:
- painless testing;
- lack of blood contact;
- no additional expenses for test tapes and lancets;
- The procedure does not injure the skin.
Measuring devices are divided according to the principle of work on photometric and electrochemical. The first option is the first generation glucometer. It defines the indicators with less accuracy. Measurements take place by contacting the sugar with the substance on the test tape and subsequent comparison with the control samples. Now they are no longer sold, but may be in use.
Electrochemical devices determine the indicators by measuring the current. It occurs when blood interacts with a specific substance on sugar tapes.
The principle of operation of the apparatus
The principle of operation of the meter depends on the method of measurement.
Testing with photometric will be significantly different from non-invasive.
The study of the concentration of sugar by an ordinary apparatus is based on a chemical method. The blood reacts with the reagent on the test tape.
When the photometric method is the color analysis of the active zone. With the electrochemical method, low current measurements are made. It is formed by the reaction of the concentrate on the tape.
Non-invasive devices measure performance by several methods depending on the model:
- Research using thermal spectrometry. For example, a tonoglucometer measures sugar and blood pressure with a pulse wave. Special cuff creates pressure. Pulses are sent and the data is converted in seconds into clear numbers on the display.
- Based on the measurement of sugar in the extracellular fluid. A special waterproof sensor is placed on the forearm. The skin is affected by a weak current. To read the results, it is enough to bring a reading device to the sensor.
- Research using infrared spectroscopy. For its holding a special clip is used, which is mounted on the earlobe or finger. Optical absorption of infrared radiation occurs.
- Ultrasound technique. For the study applied ultrasound, which enters the skin into the blood vessels.
- Thermal. Measured on the basis of heat capacity and thermal conductivity.
Popular types of blood glucose meters
Today the market provides a large selection of measuring devices. Modern glucometers differ in appearance, principle of operation, technical characteristics, and, accordingly, price. More functional models have alerts, average data calculation, extensive memory and the ability to transfer data to a PC.
AkkuChek Aktiv is one of the most popular blood glucose meters. The device combines a simple and rigorous design, extensive functionality and ease of use.
It is controlled by 2 buttons. It has a small size: 9.7 * 4.7 * 1.8 cm. Its weight is 50 g.
Memory is enough for 350 measurements, there is data transfer to a PC. When using expired test strips, the device notifies the user with an audible signal.
Average values are calculated, data "before / after food" is marked. Disconnection occurs automatically. Test speed - 5 seconds.
For the study, 1 ml of blood is sufficient. In the case of underdosing blood can be applied again.
AccuChek Active price is about 1000 rubles.
The TC circuit is a compact model for measuring sugar. Its distinctive features: a bright port for stripes, a large display combined with compact dimensions, a clear image.
It is controlled by two buttons. Its weight is 58 g, dimensions: 7x6x1.5 cm. Testing takes about 9 seconds. For it will need only 0.6 mm of blood.
When using the new packing of tapes, it is not necessary to enter the code every time, coding occurs automatically.
The memory of the device - 250 tests. The user can transfer them to a computer.
Price Kontour TS - 1000 rubles.
VanTach UltraIzi is a modern high-tech device for measuring sugar. Its distinctive feature is a stylish design, a screen with high accuracy of images, a user-friendly interface.
Presented in four colors. Weight is only 32 g, dimensions: 10.8 * 3.2 * 1.7 cm.
It is considered a light version. Designed for simplicity and ease of use, especially outdoors. Its measurement speed is 5 s. For the test, 0.6 mm of the material is required.
The function of calculating the average data and markers are not. It has an extensive memory - it stores about 500 measurements. Data can be transferred to a PC.
The cost of OneTouchUltraEasy - 2400 rubles.
Diakont is a budget blood glucose meter that combines ease of use and accuracy.
Measures larger than average and large screen. Device dimensions: 9.8 * 6.2 * 2 cm and weight - 56 g. 0.6 ml of blood is necessary for measurement.
Testing takes 6 seconds. Test tapes do not need coding. A distinctive feature is the inexpensive price of the device and its consumables. The accuracy of the result is about 95%.
The user has the option of calculating the average. Up to 250 studies are stored in memory. Data is transported to PC.
The cost of Diacont OK - 780 rubles.
Omelon is a device that measures glucose, pressure and pulse. It is an alternative to conventional blood glucose meter. It is presented in two versions: Omelon A-1 and Omelon B-2.
The latest model is more advanced and accurate than the previous one. Very easy to use, without extended functionality.
Outwardly very similar to the usual blood pressure monitor. Designed for people with type 2 diabetes. The measurement is performed non-invasively, the pulse wave and vascular tone are analyzed.
Suitable mainly for home use, because it has a large size. Its weight is 500 g, dimensions 170 * 101 * 55 mm.
The device has two test modes and last metering memory. Automatically turns off after 2 minutes of rest.
Price Omelon - 6500 rubles.
When is it important to measure blood sugar?
In case of diabetes mellitus, indicators must be measured regularly.
Monitoring indicators is necessary in the following cases:
- determine the effect of specific physical activity on the concentration of sugar;
- track hypoglycemia;
- prevent hyperglycemia;
- identify the degree of influence and effectiveness of drugs;
- identify other causes affecting the increase in glucose.
Sugar level is constantly changing. It depends on the rate of conversion and absorption of glucose. The number of tests depends on the type of diabetes, the course of the disease, the treatment regimen. With diabetes mellitus 1, measurements are taken before waking up, before meals and before bedtime. May need total control indicators.
His scheme looks like this:
- immediately after lifting;
- before breakfast;
- when taking fast unplanned insulin (unplanned) - after 5 h;
- 2 hours after meals;
- after physical labor, excitement or overvoltage;
- before bedtime.
With diabetes mellitus 2, it is sufficient to conduct testing once a day or once every two days, if we are not talking about insulin therapy. Additionally, research should take place when changing diet, daily regimen, loads, switching to a new glucose-lowering drug. With diabetes mellitus 2, which is controlled by low-carb nutrition and physical education, measurements are less frequent. A special scheme of monitoring indicators prescribed by the doctor during pregnancy.
Video recommendation for measuring blood sugar:
How to ensure the accuracy of measurements?
The accuracy of the home analyzer is an important point in the diabetes monitoring process. The results of the study are influenced not only by the precise work of the device itself, but also by the procedure, quality and suitability of test strips.
To check the accuracy of the device, a special control solution is used. You can independently determine the accuracy of the device. For this you need within 5 minutes to measure sugar in a row 3 times.
The difference between these indicators should not differ by more than 10%. Each time before buying a new packaging of tapes, the codes are checked. They must match the numbers on the machine. Do not forget about the shelf life of consumables. Old test strips may show incorrect results.
Correctly conducted research is the key to accurate indicators:
- fingers are used for a more accurate result - blood circulation is higher there, respectively, more accurate results;
- check with the control solution the accuracy of the device;
- compare the code on the tube with test tapes with the code indicated on the device;
- properly stored test tapes - they do not tolerate moisture;
- correctly apply blood to the test tape - the places for collection are on the edges, not in the middle;
- insert strips into the device just prior to testing;
- paste test tapes with dry hands;
- When testing, the puncture site should not be wet - this will lead to incorrect results.
A sugar measuring device is a sure assistant in the process of controlling diabetes. It allows you to measure indicators at home at a set time. Proper preparation for testing, compliance will ensure the most accurate result.