What color is used to identify trace element free blood collection tubes?

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Multiple Choice

What color is used to identify trace element free blood collection tubes?

Explanation:
Trace element free tubes are designed to minimize metal contamination when testing blood for trace elements. The color coding for these specialized tubes is royal blue, signaling that the tube is manufactured to be free of trace metals that could skew results. This is different from other blue, green, or tan tubes, which are used for different purposes and may contain additives that could introduce metals. So for accurate trace element analysis, using the royal blue tube helps ensure the specimen remains free from external metal contamination.

Trace element free tubes are designed to minimize metal contamination when testing blood for trace elements. The color coding for these specialized tubes is royal blue, signaling that the tube is manufactured to be free of trace metals that could skew results. This is different from other blue, green, or tan tubes, which are used for different purposes and may contain additives that could introduce metals. So for accurate trace element analysis, using the royal blue tube helps ensure the specimen remains free from external metal contamination.

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