Also, amplification was inhibited by four μL or increased of swab sample. Taken collectively, these final results ensure that viral RNA could be detected by immediate addition of swab samples in UTM to TaqPath master mix if the amount of swab sample added does not exceed ~five–10% with the total https://www.quora.com/profile/Even-Sa/What-kind-of-samples-can-be-extracted-by-nucleic-acid-extraction-reagent-Whole-blood-serum-plasma-tissues-swabs-v