For which tube type is the inversion exception 5 times?

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Multiple Choice

For which tube type is the inversion exception 5 times?

Explanation:
The key idea is that different blood collection tubes require specific numbers of inversions to mix the contents properly. Serum tubes contain a clot activator but no anticoagulant, so you want to promote clotting and then separate the serum. Five gentle inversions ensure the clot activator is evenly distributed and clotting proceeds efficiently without causing damage to cells. In contrast, tubes with anticoagulants (such as citrate, EDTA, or heparin) need different inversion counts to ensure the additive is thoroughly mixed and the intended effect (preventing clotting or preserving certain analytes) is achieved. Because of this, five inversions are characteristic of serum tubes, making them the correct choice.

The key idea is that different blood collection tubes require specific numbers of inversions to mix the contents properly. Serum tubes contain a clot activator but no anticoagulant, so you want to promote clotting and then separate the serum. Five gentle inversions ensure the clot activator is evenly distributed and clotting proceeds efficiently without causing damage to cells. In contrast, tubes with anticoagulants (such as citrate, EDTA, or heparin) need different inversion counts to ensure the additive is thoroughly mixed and the intended effect (preventing clotting or preserving certain analytes) is achieved. Because of this, five inversions are characteristic of serum tubes, making them the correct choice.

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