2020-10-16

[public] 212K views, 11.1K likes, dislikes audio only

MinuteEarth

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The lab-on-a-stick that lets us know if we’re pregnant is a genius bit of technology that can be used to quickly determine everything from whether there are nuts in our chocolate to whether we have COVID.

LEARN MORE

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To learn more about this topic, start your googling with these keywords:

Early Pregnancy Test: A simple lateral flow assay that tests for the presence of a particular hormone in urine.

Lateral Flow Assay: Simple tests in which a liquid sample is run along the surface of a pad using capillary action and colored antibodies to show a visual positive or negative result.

Capillary Action: The movement of water-based liquids within small tubes due to the forces of cohesion, adhesion, and surface tension.

Antibody: A blood protein produced by the immune system in response to a particular antigen.

Antigen: A foreign substance which produces an immune response within the body.

False positive: A result produced that falsely indicates a particular antigen is present.

False negative: A result produced that falsely indicates that a particular antigen is absent.

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CREDITS

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David Goldenberg | Script Writer, Narrator and Director

Arcadi Garcia Rius | Illustration, Video Editing and Animation

Nathaniel Schroeder | Music

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REFERENCES

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Koczula, K., and Gallotta, A. (2016) Lateral Flow Assays. Essays in Biochemistry, 60: 111-120. Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986465/.

Seo, K., Holt, P., Stone, H. and Gast, R. (2003). Simple and rapid methods for detecting Salmonella enteritidis in raw eggs. International Journal of Food Microbiology, 87: 139-144. Retrieved from: https://pubmed.ncbi.nlm.nih.gov/12927716/.

Bishop, J., Hsieh, H., Gasperino, D., and Weigl, B. (2019). (1997). Sensitivity enhancement in lateral flow assays: a systems perspective. Lab On A Chip, 19: 2486-2499. Retrieved from: https://pubs.rsc.org/en/content/articlelanding/2019/lc/c9lc00104b#!divAbstract.

O’Farrell, B. (2008). Evolution in Lateral Flow–Based Immunoassay Systems. Nature Public Health Emergency Collection. Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7119943/

Collins, F. (2020). Charting a Rapid Course Toward Better COVID-19 Tests and Treatments. NIH Director’s Blog. Retrieved from: https://directorsblog.nih.gov/2020/08/06/charting-a-rapid-course-toward-better-covid-19-tests-and-treatments/

Shen, A. Personal Communication (2020). Director, Micro/Bio/Nanofluidics Unit at Okinawa Institute of Science and Technology. https://groups.oist.jp/mbnu