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A member asked:
What different blood tests usually require blood drawn from an artery for accurate diagnosis?
5 doctors weighed in across 2 answers
You have misunderstood something. There are no blood tests that require arterial blood; venous is always OK. (Except for occasional severely ill hospitalized patients, in whom arterial blood is sampled to measure blood oxygenation. But no blood counts, infection diagnosis, or chemistry tests require arterial blood.
Answered 10/4/2021
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The usual test on arterial blood is an arterial blood gas which provides better information on oxygenation than the test done on venous blood.
Answered 10/2/2021
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