What tests is the Royal blue top tube commonly used for?

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What tests is the Royal blue top tube commonly used for?

Royal blue top tubes are designed to be free of trace metal contamination, which is crucial when measuring trace elements and related analyses. Because these tests involve very small amounts of metals, any background contamination from the tube could skew results. That makes the royal blue tube ideal for trace elements determination, nutritional chemistry, and toxicology. Other common tests—like coagulation studies, hematology CBC, or glucose tolerance tests—use tubes with specific additives or compositions that are not intended to be trace-element free, so they’re not the typical choice for these analyses.

Royal blue top tubes are designed to be free of trace metal contamination, which is crucial when measuring trace elements and related analyses. Because these tests involve very small amounts of metals, any background contamination from the tube could skew results. That makes the royal blue tube ideal for trace elements determination, nutritional chemistry, and toxicology. Other common tests—like coagulation studies, hematology CBC, or glucose tolerance tests—use tubes with specific additives or compositions that are not intended to be trace-element free, so they’re not the typical choice for these analyses.

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