Pooling Coronavirus Tests Can Spare Scarce Supplies, But There’s A Catch

Specimens collected from multiple people can be combined into one batch to test for the coronavirus. A negative result would clear all the specimens.

Instead of running a coronavirus test on every specimen, a lab can combines multiple samples. If the batch is negative, then everyone is in the clear. A positive leads to a second round of testing.

(Image credit: Nati Harnik/AP)

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