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How long can you store urine before it becomes unusable for testing or analysis?
Urine can typically be stored for up to 24 hours at room temperature before it becomes unsuitable for testing or analysis. After this time, changes in the composition of the urine may affect the accuracy of test results. It is recommended to refrigerate urine if it cannot be tested within 24 hours.
Why is it necesssary to clean the surfaces of the metals before testing them?
Cleaning the surfaces of metals before testing removes any contaminants, such as dirt, grease, or oils, that could interfere with the test results. This ensures the accuracy and reliability of the testing by providing a clean surface for proper analysis.
What color tube is used for t3 uptake?
A red-stoppered tube is typically used to collect blood for T3 uptake testing. It contains no additives, allowing the blood to clot before analysis.
Can urine be stored in the fridge before lab testing?
Yes, urine can be stored in the refrigerator before lab testing for up to 24 hours. It should be kept in a sealed container to prevent contamination, and brought to room temperature before testing to ensure accurate results.
A cbc specimen rejected for testing by the hematology dept the tube was filled completelly and labeled properly what might have been the reason for rejection?
One potential reason for rejection could be that the specimen clotted before analysis. Clotted samples can interfere with accurate testing of the complete blood count (CBC) parameters. Another reason could be hemolysis, which is the breakdown of red blood cells, leading to inaccurate results. It's also possible that there was an issue with transportation or handling of the sample that compromised its integrity.
