How many times should a pink topped tube be inverted after collection?

The correct answer is that a pink topped tube should be inverted 8 times after collection. This pink topped tube typically contains EDTA as an additive, which acts as an anticoagulant. The purpose of inverting the tube is to ensure proper mixing of the blood with the anticoagulant.

Inverting the tube the correct number of times is crucial because insufficient mixing can lead to clots in the sample, compromising the integrity of the specimen and potentially leading to inaccurate test results. The recommended number of inversions for a tube containing EDTA is 8, as it allows for even distribution of the additive throughout the blood.

Other amounts of inversions may not achieve the same level of mixing or could potentially damage blood cells or compromise sample quality. Characteristics of the pink topped tube and its additive dictate this specific requirement, making 8 inversions the standard practice for ensuring accurate and reliable laboratory results.