| CPC G01N 21/6486 (2013.01) [G01N 21/47 (2013.01); G01N 33/487 (2013.01)] | 8 Claims |
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3. A platelet detection method applied to a blood cell analyzer comprising an optical detection system, wherein the optical detection system comprises a laser, a front optical assembly comprising an optical isolator, a rear optical assembly, a flow chamber, and a first detector; the method comprises:
providing a test sample solution containing platelets;
making platelet particles in the test sample solution pass through a detection area of the flow chamber one by one;
performing front optical treatment on a laser beam emitted by the laser by using the front optical assembly so that the laser beam subjected to the front optical treatment is converged at the detection area of the flow chamber in a first direction and scattered light is generated when the platelet particles pass through the detection area;
performing rear optical treatment on the scattered light by using the rear optical assembly so that the scattered light subjected to the rear optical treatment enters the first detector,
wherein reflected light generated when the laser beam passes through the flow chamber is isolated by the optical isolator, in order to prevent the reflected light from being fed back to the laser; and
performing light intensity detection on incident scattered light by using the first detector to obtain a first detection result so as to identify the platelet particles based on the first detection result;
wherein the blood cell analyzer further comprises a second detector; correspondingly, the method further comprises:
performing light intensity detection on the scattered light which forms an angle within a preset angle range with a propagation direction of the laser beam to obtain a second detection result, thereby identifying the platelet particles based on the first detection result and the second detection result.
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