Nasopharyngeal Swabs 

#GS3 #Science&Technology 

In the current pandemic scenario, global supplies of nasopharyngeal (NP) swabs are not dependable resulting in supply chain delays, escalating prices and variable quality. 

CSIR-National Chemical Laboratory (CSIR-NCL), Pune, has developed an indigenous NP swab for collecting samples from the throat cavity of COVID-19 patients. 

What is a nasopharyngeal swab? 

  • Nasopharyngeal swab is a medical device with stringent specifications of quality, polymer grade, dimensions and sterilisation. 
  • An NP swab consists of a cylindrical plastic stick with a brush-like tip of synthetic bristles/flocks. 
  • The flocking process helps align the fine bristles in a parallel orientation on the stick head, much like a tooth brush, except that this has round uniform geometry and the NP swab bristles are of micron diameter. 
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