Assessment of the Serum Separator Tube as an Intermediate Storage Device with in the Laboratory

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Abstract
An integral blooddrawing- serum separator tube, (SST) is evaluated for use as an inlaboratory serum storage device. Sera stored in the SST were compared with paired controls that were specimens from the same subjects stored in closed culture tubes. Eighty-six serum chemistry determinations showed no clinically significant change as a result of 48 hours of storage in the original blood-drawing tubes. Storage of serum in this manner provides the laboratory with specimens for reanalysis or additional analyses while eliminating manipulative steps, including serum removal, tube relabeling, and intertube transfers, and reducing errors due to misidentification and/or contamination.

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