Stability of blood gases in ice and at room temperature.

Author(s): Liss HP, Payne CP Jr

Publication: Chest, 1993, Vol. 103, Page 1120-2

PubMed ID: 8131450 PubMed Review Paper? No

Purpose of Paper

Conclusion of Paper

Studies

1. Study Purpose

   The purpose of this study was to determine the effects of storage on arterial blood gas and pH.

   Summary of Findings:

   Changes in PO2, partial PCO2 and pH were not significantly different between specimens stored at room temperature and those stored on ice for up to 30 minutes. At both storage temperatures, PO2 increased after 15 minutes (p<0.001), and a further increase was found after 30 minutes (p<0.001). Whether stored on ice or at room temperature, PCO2 decreased after 15 minutes of storage (p=0.002-0.006). With storage at room temperature or on ice, pH decreased after 15 minutes (p=0.007-0.011) but a further decrease after 30 minutes was only significant in specimens stored at room temperature (p=0.003). The authors conclude that for blood gas determinations, specimens can be stored at room temperature if analysis will be done within 30 minutes.

   Biospecimens

   • Bodily Fluid - Blood

   Preservative Types

   • None (Fresh)

   Diagnoses:

   • Not specified

   Platform:

   Analyte	Technology Platform
   Gas	Clinical chemistry/auto analyzer
   Small molecule	pH

   Pre-analytical Factors:

   Classification	Pre-analytical Factor	Value(s)
   Storage	Storage temperature	On ice Room temperature
   Storage	Storage duration	0 min 15 min 30 min

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