近年来国外在临床检验方面有相当数量的检验已由医院化验室转向家用化验(In hometesting)。这类化验多数是由病员自己进行化验操作,故又称自行化验(Self-testing)。以美国为例家用化验试剂的销售额1984年已达2.4亿美元,并以20％的年增长率递增,估计10年内可达10亿美元以上。近十年来美国食品药物局(FDA)已陆续批准了75个 In recent years, a large number of foreign clinical tests have been turned from hospital laboratories to home testing (In home testing). Most of these tests by the patient’s own test operation, it is also known as self-testing (Self-testing). In the United States, for example, sales of home assay reagents have reached $ 240 million in 1984 and have been increasing at an annual rate of 20%, accounting for an estimated $ 1 billion over a 10-year period. The United States Food and Drug Administration (FDA) has approved 75 in the past decade