Frequent Questions

Are hold times meant to be to the minute of collection or day of collection? For example, for a 14 day holding time, would a sample collected at 10:30 expire at 10:30 on day 14 or at 23:59 on day 14?

For most of the chemistry methods, the holding time criteria generally refer to the length of time that a properly preserved sample can be held at a specific temperature (e.g., 4 oC) and that usually means the time/temperature criteria when the samples reach the laboratory. So it’s not really talking about the time involved with collecting and shipping the sample.

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