When laboratory tests are performed on patients suffering from sepsis, the white blood cell count is significantly increased, usually up to (20-30) x 109/L or more, or decreased, left-shifted, or increased naive type, and toxic granules appear. Routine blood tests for the presence of toxic particles: Routine blood tests are the most general and basic blood tests. Routine blood tests are usually taken from peripheral blood for examination, such as blood from the fingertip and earlobe area. After passing through the blood cell analysis instrument, the computer reports the results and this item has become a routine for examining patients. Blood consists of two major parts, liquid and tangible cells, and routine blood tests are performed on the cellular part of the blood. Blood has three different functions of cells – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets. Diseases are determined by observing changes in number and morphological distribution. It is one of the common auxiliary examinations for doctors to diagnose the condition. Routine blood test procedure: 1. Take a suitable test tube and add an appropriate amount of diluent. Take a micropipette and latex tip connected, check if the connection is leaking, or take a disposable micropipette for backup. 2.Gently massage the inner side of the middle finger or ring finger of the left hand to make the local tissue naturally engorged with blood. 3.Wipe the blood collection site with a 75% ethanol swab and leave it to dry. 4.Fix the blood collection site with the left thumb and index finger to make the skin and subcutaneous tissues taut, and hold a disposable sterile blood collection needle in the right hand to pierce the inner side of the ventral end of the finger to a depth of 2-3 mm, and immediately dispense the needle. 5.After the blood flows out naturally, wipe off the first drop of blood with a sterile dry cotton ball. 6.Aspirate the blood with a disposable micropipette, and then press the wound with a sterile dry cotton ball to stop the bleeding, if the blood flow is not smooth, use the left hand to apply slight pressure from the distal end of the blood collection site to the end of the finger to make the blood flow. 7.Wipe the outside of the micro pipette with a sterile dry cotton ball, stick the pipette into the bottom of the test tube with diluted liquid, slowly discharge the blood inside the pipette, and rinse the remaining blood in the tube with supernatant 2~3 times, and finally mix the liquid inside the test tube.