Treatment of Blood Samples of Experimental Animals-----Series IV How to avoid hemolysis of blood specimens? What should I pay attention to? Treatment of Blood Samples of Experimental Animals Series IV - Factors Affecting the Quality of Blood Specimens 1. The inner wall of the blood collection needle is not smooth Blood collection needle classification: 1) Stainless steel needle: The outer wall is smooth, the inner wall looks smooth, the body is rough, and it is easy to scratch the cells, causing a hemolysis cascade reaction, resulting in hemolysis of blood specimens. 2) Venous retention needle: The outer wall is smooth and the inner wall is smooth, which can avoid scratching cells and effectively prevent hemolysis caused by blood collection process, but the cost is high. 2, blood specimens container is not clean 3, mixed into animal hair The operation of the blood collection process is not enough and is not clean enough, causing foreign matter such as animal hair to enter or contact with blood specimens, causing hemolysis. 4, the pumping speed is too fast, the pressure is too large The greater the withdrawal speed in the effective needle cross-section, the greater the pressure, the cells are squeezed, easily causing rupture, causing hemolysis. 5. The needle is not removed when the blood is injected into the container from the syringe. When the blood is injected into the vacuum blood collection tube, the vacuum pressure is too large, causing the cells to burst and rupture, causing hemolysis. The needle should be removed and the blood injected slowly along the wall of the tube without foaming. 6, the formation of air plugs when collecting blood The blood can only be pumped outwards and cannot be pushed into the blood vessels to avoid injecting air to form a gas plug, which leads to hemolysis. 7, the experimental factors Hemolysis due to the experimental factors, such as chloral hydrate, has a slight hemolysis effect. 8, violent shock during transportation Avoid hemolysis reactions caused by violent shock during the transport of blood specimens.
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Moisturizing means moisturizing the skin. When the air temperature decrease, the skin cutin layer can't timely adjust enough moisturizing factor, sebum gland activity decreased, grease, moisture falling on her face, the skin will be tight phenomenon, even in the current and near nose fine lines, through the use of a corresponding effect of skin, keep skin is tasted, nourish the skin and prevent skin evaporation, improve microcirculation, enhance the process of skin moisture, It's called moisturizing, and the best moisturizing is the positive interaction between skin and moisturizing products.
Air humidity is reduced, the cuticle of the skin cannot adjust enough protect wet factor in time, and the active ability of grease gland is also in decrease, the grease on the face will be reduced, because this skin is easy to take up, be in at present reach nasal side more can appear fine line. Moisturize well to prevent fine lines, to do a good job of moisturizing, is to let the skin maintain more water, so as to reduce the dry caused by fine lines.