An estimate of the platelet count is usually given as part of the complete blood count (CBC). It should not be neglected when reviewing CBC results as it is a fair screening test and satisfactory for most purposes in the emergency department. It is a quantitative study, and the functional status of the platelet must always be considered in interpretation of clinical significance. Patients presenting with abnormal bleeding histories, particularly women with mucosal origin bleeding, should have an evaluation of platelet quantity by an accurate method and functional quality by a bleeding time. Though rarely used, the emergency physician should be familiar with the indication and mechanics of platelet transfusions. The laboratory charge for the platelet count is $17.00 to 18.00, whether it is automated or hand counted.
血小板计数的估算通常作为全血细胞计数（CBC）的一部分给出。在查看CBC结果时不应忽视它，因为它是一项相当不错的筛查测试，在急诊科用于大多数目的都令人满意。这是一项定量研究，在解释临床意义时必须始终考虑血小板的功能状态。有异常出血史的患者，尤其是有黏膜出血的女性，应该通过准确的方法评估血小板数量，并通过出血时间评估功能质量。虽然很少使用，但急诊医生应该熟悉血小板输注的适应证和操作方法。血小板计数的实验室收费为17.00至18.00美元，无论是自动计数还是手工计数。
