The length of time blood can sit depends on its intended use and storage conditions.
Storage Timelines for Blood Samples
Different storage conditions significantly impact how long blood remains suitable for testing. Here's a breakdown:
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Room Temperature: Whole blood samples should not remain at room temperature for longer than 8 hours. After this time, accuracy of test results may be compromised.
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Refrigerated: If tests aren't completed within 8 hours, samples should be refrigerated at +2°C to +8°C for a maximum of 7 days. Beyond 7 days, refrigeration is insufficient to maintain sample integrity.
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Frozen: For storage beyond 7 days, samples must be frozen at -15°C to -20°C. The duration of storage in this condition depends on the specific test required, and best practices should be consulted.
Important Considerations
Remember that these guidelines apply to whole blood samples. Different blood components (like plasma or serum) might have slightly different storage requirements. Always refer to the specific instructions provided by the laboratory or testing facility conducting the analysis.
