What they found was that treatment for those monitored through either test was more expensive because of the cost of laboratory monitoring.

由于实验室检查的费用，他们发现了通过哪种试验检测为指导的治疗更贵。

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Mr. MAYS: It can be expensive, you know, not prohibitively expensive, but it would probably cost you more to have a quality laboratory run a thorough lead test for you than it would for just the cost of the toy.

NPR: Do Home Lead-Testing Kits Work?