Which statement is true about royal blue tubes?

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Multiple Choice

Which statement is true about royal blue tubes?

Explanation:
Royal blue tubes are designed for testing where avoiding trace metal contamination is essential, so they’re used for toxicology (drug testing) and for trace element analyses. That combination of purposes is why this statement is true. They aren’t tan colored, and ABO typing isn’t performed with royal blue tubes. Regarding EDTA, some royal blue variants do contain EDTA, but not all, so saying they inherently contain EDTA isn’t universally accurate.

Royal blue tubes are designed for testing where avoiding trace metal contamination is essential, so they’re used for toxicology (drug testing) and for trace element analyses. That combination of purposes is why this statement is true. They aren’t tan colored, and ABO typing isn’t performed with royal blue tubes. Regarding EDTA, some royal blue variants do contain EDTA, but not all, so saying they inherently contain EDTA isn’t universally accurate.

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