A centrifuge in a medical laboratory rotates for blood separation are generally low-speed centrifuge rotates at an angular speed of 3600 rpm- 4000 rpm, 5-10 minutes.The centrifugal effect is not good if the speed is too low or too high. The last used settings for running time and speed are automatically saved.

The medical centrifuge is a basic instrument necessary for the laboratory and has a wide range of uses.KETHINK benchtop medical centrifuges can meet the needs of most hospital medical laboratory. 

• Four items of coagulation test 

The four items of coagulation are very common test items in the laboratory, which are mainly used for the examination of thrombotic diseases. It is a must-check item before surgery, a pre-thrombosis check item, and a monitoring bed for patients with oral anticoagulants. The general centrifugation protocol is: 3000 rpm, 10 min and then test.

• Blood type testing

 The correct identification of blood type is one of the most important routine tests of blood station/hospital laboratory, because the correct blood type is related to the life safety of the blood recipient. Confirmation is performed at 3000rpm, 5min centrifugation conditions. The test results show that the correct interpretation rate of ABO and RH blood types under this centrifugal condition is 100%.

Besides of our benchtop medical centrifuges (multi-functional purpose), a specially designed gel card centrifuge KT-TXK4 can also perfome the human blood type testing centrifuge with special rotor suits for 12/24 cards.

• Urine sediment detection

Take 10ml urine into the centrifuge tube, set the relative centrifugal force (RCF) 400g, effective centrifugal radius 15cm*1500rpm, centrifuge for 5min. Reserve 0.2ml sediment by standard operation and mix well, add 20uL to the urine sediment quantitative counting plate, and let it stand for 3min then count.

Besides of our benchtop medical centrifuges (multi-functional purpose) , a urinary sediment centrifuge KT-TDZ4E with multi-tube rack is recommend for only urine sediment test purpose.

• Detection of glycosylated hemoglobin

Clinically, HbAlc is often used as an important auxiliary diagnostic index for diabetes. Because the life span of red blood cells is shortened during anemia, the Hb level is reduced, the time that Hb in the red blood cells is exposed to glucose in the blood is shortened, and the time of glycosylation is shortened, so the HbAlc level is low. When using packed red blood cells to detect glycosylated hemoglobin, in order to ensure the accuracy of the test results, centrifuge at 3000rpm and the time should be controlled at least 2min.

• Biochemical test of abdominal effusion

Ascites is a common clinical syndrome, often caused by inflammatory infection, tuberculosis, tumor, heart failure, liver cirrhosis, etc. Laboratory testing is helpful for the differential diagnosis of the nature of effusion, thereby providing an important basis for clinical diagnosis. Different centrifugation protocols (1500rpm*5min and 3500rpm*15min) before and after treatment, the results were not statistically significant (P>0.05), but in view of the fact that there are often clots in the ascites, especially in the exudate, it is easy to cause the needle to block or aspirate inaccuracy, etc. cause instrument loss or result deviation. Therefore, it is recommended to pre-process the puncture fluid by centrifugation. The centrifugal speed should not be too low and the centrifugation time should not be too short.

• Cerebrospinal fluid testing

Infections, tumors, trauma, etc. in any part of the central nervous system can cause changes in the properties and composition of cerebrospinal fluid. Cerebrospinal fluid examination provides a basis for the diagnosis and treatment of central nervous system diseases. Normal cerebrospinal fluid is colorless and transparent. When the cerebrospinal fluid is red, it is necessary to distinguish pathological hemorrhage from puncture injury. At this time, a centrifuge machine is used, 1500rpm, and then judged according to the color of the upper layer.

• Clinical biochemical testing

The commonly used clinical test method of biochemical laboratory is centrifugation. The various indicators of biochemical test are an important basis for clinical diagnosis of diseases. It is of great significance for the accurate diagnosis of patients and timely correct clinical treatment. Centrifuge at 4000rpm, freezing/high temperature storage can cause hemolysis and affect the accuracy of the results.

• Assisted reproduction

Experimental results show that low-speed, short-term centrifugation has no obvious effect on sperm motility and 6-hour survival rate, but it can improve sperm motility, which is manifested by increased sperm penetration. Current studies have shown that sperm motility, especially the forward motility of sperm, is an important factor in determining whether sperm can be fertilized. The in vitro sperm processing technology in assisted reproduction aims to improve the motility of sperm to a certain extent after in vitro processing, thereby increasing its fertilization rate. When the centrifugation speed and time are 1000r/min and 6min by horizontal rotor, the sperm motility can be increased. Increasing the centrifugation speed and time will reduce the sperm motility.