The Accutrend GC and GCTL devices are designed to measure various blood parameters. fitnessASSIST sells the Accutrend range of kits, three varieties, and all relavant consumables for on-going use. This article is designed to offer support and further guidance to the nature of the products, their use and application. The three kits supplied by fitnessASSIST are:
1. Roche Accutrend Lactate Plus GCTL Kit - ROC013/LAC
This kit is primarily ffor use by Sports Coaches wishing to design fitness training programmes based on the athletes production of blood lactate during intense exercise. fitnessASSIST however offers th eopportunity to adjust the FREE consumables to include more lacatate strips than the other consumables.
2. Roche Acutrend Plus GCTL - ROC013/GCT
In fact this kit is the same as the option refered to above, but is supplied with the standard starter kit of FREE consumables, 25 Cholesterol test strips, 50 Glucose test strips, 25 Triglyceride test strips and 25 Lactate test strips.
3. Roche Accutrend Plus GC Kit
The GC kit is offered as the same Accutrend Plus format, but with the ability to measure the parameters of Cholesterol and Glucose, the kit therefore only includes the test strips for these parameters. The device itself is set-up at manufacture with ONLY these two parameters available for selection and therefore mesurement.
User's of the Accutrend mesuring device are advised to read the manual suplied with the device carefully before using the instrument. This will familiarise the user with the required preparations and the measurement procedure before performing the first measurement. User's are also advised to read the package inserts of the test strips to be used for the planned test.
The test principle is the sample for each of the blood parameters cholesterol, glucose, triglyceride and lactate. Each test strip however has a different formulation to match the required enzymatic reaction with the relevant blood parameter to be measured. By means of a code strip, the instrument reads the lot-specific charteristics of the test strips currently in use. This information is stored and therefore needs only to be read once per test strip container. An unused test strip is taken from the containe and inserted into the instrument. While inserted, the application area of the test strip is illuminated by an LED (light-emitting diode) from below. Before the actual measurement is performed, the reflection behaviour of the test strip is determined by means of the light which is reflected from the application area of the test strip.
The blood sample is then applied to the application area and the measurement chamber flap is closed. The constituent to be etermined in the applied sample undergoes an enzymatic reaction with formation of dye. The amount of dye formed increases with the concentration of the substance to be determined.
After a certain period of time, depending on the test parameter to be measured and the speed of the specific enzymatic reaction, the colour intensity is measured by illuminating the application area again from below using the LED. The intensity of the reflected light is measured with a detector (relectance photometry). The measured value is determined from the signal strength of the reflected light, with the previously measured blank value and the read lot-specific information (code-strip) also being consdered. Finally, the result is displayed and simultaneously stored in the memory.
The test principle is the sample for each of the blood parameters cholesterol, glucose, triglyceride and lactate. Each test strip however has a different formulation to match the required enzymatic reaction with the relevant blood parameter to be measured. By means of a code strip, the instrument reads the lot-specific charteristics of the test strips currently in use. This information is stored and therefore needs only to be read once per test strip container. An unused test strip is taken from the containe and inserted into the instrument. While inserted, the application area of the test strip is illuminated by an LED (light-emitting diode) from below. Before the actual measurement is performed, the reflection behaviour of the test strip is determined by means of the light which is reflected from the application area of the test strip.
The blood sample is then applied to the application area and the measurement chamber flap is closed. The constituent to be etermined in the applied sample undergoes an enzymatic reaction with formation of dye. The amount of dye formed increases with the concentration of the substance to be determined.
After a certain period of time, depending on the test parameter to be measured and the speed of the specific enzymatic reaction, the colour intensity is measured by illuminating the application area again from below using the LED. The intensity of the reflected light is measured with a detector (relectance photometry). The measured value is determined from the signal strength of the reflected light, with the previously measured blank value and the read lot-specific information (code-strip) also being consdered. Finally, the result is displayed and simultaneously stored in the memory.
The Accutrend Plus instrument wil perform properly if used within the following terms.
Acceptable temperature range for operation is test-dependent: cholesterol & triglycerides 18-30oC, glucose 18-32oC and lactate 15-35oC.
The relative humidity for all testing is governed by being not greater than 85%
The measurement can be performed with the instrument on a level flat surface or held in the hand in a simialar orientation.
Strong electromagnetic fields may impair the function of the instrument. It is advised not to use the instrument close to sources of strong electromagnetic radiation.
The Accutrend Plu instrument comprises numerous integrated or available control functions to ensure good quality control:
A check of the optical system and the overall function by means of the control solutions. (See Accessories & Consumables Control Solutions)
The device requires four batteries (1.5V AAA) to be installed to operate. To save power, the instrument turns itself off after 2 minutes unless a button is pressed or a new test strip is inserted. When the instrument turns itself off, all test results obtained so far remain in the memory. With a new set of batteries you will normally be able to perform at least 1,000 measurements. When the battery warning is displayed for the first time, approximately 50 measurements can still be performed.
The batteries used should only be AAA alkaline manganese batteries. Replace batteries within 2 minutes to keep the set date and time, otherwise they will need to be reset. You should note that measurement results, including the related measurement date and time, and other instrument settings, remain stored even when no batteries are inserted.
The following settings are available for customisation by the user of the Accutrend Plus: date format DD.MM.YY or MM-DD-YY, Date itself, time format 24hr or 12 h with AM/PM, time tself, Sound on/off and Lactate result in Blood (BL) or Plasma (PL).
To perform a test usig the Accutrend Plus instrument you will require:
The brief overview of the steps to be carried out are:
Code Strips - via the barcode contains lot-specfic information which is read and stored in the instrument. Each code strip belongs to one particular test strip container, always store together.
Sample Material - fresh capillary blood is used as a sample. You need a free hanging blood drop for measurement.
Lancing Device - the recommedned method is to use the Accu-Chek Safe-T-Pro a single use device therefore reducting the risk of contamination.
Checking the applied blood - the application area of the test strip must be completely covered to obtain accurate results. If too little blood is applied do not try to spread or apply second drop as this may lead to a false measurement. Repeat the measurement with a new test strip.
Flagging Measurements - the device allows you to flag specific measurements, thereby linking the measurement to specific events i.e. meals, activity or use of the control solution for quality checks.
Control check with control solutions - the control solution checks are important for control quality, it is important to regularly check after specific events i.e. 25 tests, replacing batteries, after cleaning, or if you have concerns about the measured values. A control check is performed in the same way as a regular measurement with the difference that control solutions are used instead of blood.
Memory the Accutrend Plus instrument has four memory areas determined by the specific blood parameters, each of which can be used to store up to 100 measured values together with date, time and flags.
Cleaning of the optical measuring system is a basic prerequisite for determining precise measured values. The cleaning has to be regular and immediately after it becomes dirty. The actual detailed instructions are explained fully in the user manual provided with the Accutrend Plus instrument
Error Messages - in certain circumstances error messages may appear on your display. They are intended for first line solution finidng to a problem, such as operating within temperature perameters.
Ordering consumables
Accutrend Glucose 50 - 50 test strips for determing blood glucose
Accutrend Control G - control solution set to be used with Accutrend Glucose test strip
Accutrend Cholesterol 25 - 25 test strips for determining cholesterol in the blood
Accutrend Control CH1 - control solution to be used with Accutrend Cholsterol test strips
Accutrend Triglycerides 25 - 25 test strips for determing triglycerides in the blood
Accutrend Control TG1 - control solution to be usd with Accutrend Triglycerides tst strips
BM-Lactate 25 - 25 test strips for determining lactate in the blood
BM-Control Lactate - control solution to be used with BM-Lactate test strips
Accutrend Plus Device Specifications: see each Accutrend Plus Kit Product Page
Disposal of instrument: Used instruments should be disposed of according to local regulations to avoid being a source risk of infection. The instrument however does not fall under the scope of the EC Directive 2002/96/EC directive on waste electrical and electronic equipment.
It is imperative that the user takes action to guard against potential infection risks. Any object coming into contact with uman blood is a potential source of infection. It is therefore advised:
to use gloves, when making multiple measurements in a session apply blood to the application area outside of the instrument, always use a container with a lid for disposing of waste material from the testing procedure, use a professional lancing device such as the Accu-Chek-Safe-T-Pro to prevent cross contamination of blood.
Product is covered under the following patents:
US5, 463,467;US 5,424,035; US5,334,508; US5,206,147; US5,240,860; US5,382,523; US5,521,060; US5;268,269; US6,506,575; US5,281,395
Marking: CE 0123
ACCU-CHEK, ACCUTRENDm COBAS, SAFE-T-PRO and SOFTCLIX are trademarks of Roche.
The Accutrend Plus device was first launched in 2007 by Roche Diagnostics.
The instrument complies with DIN EN61010-1 (Safety requirements for electrical equipment for measurement, control and laboratory use; General requirements). Each device is tested and is in a perfect safety condition at the end of the manufacturing and packaging process.
Installation, use and maintenance of the Acccutrend Plus instrument lies in the full responsibility of the user.