Rapid Therapeutic Science Laboratories (RTSL) 8-K Changes in Registrant's Certifying Accountant

Prager Metis CPA’s, LLC _________ 222 MOUNT AIRY ROAD BASKING RIDGE, NJ 07920 T 908.766.9800 F 908.766.9811 www.pragermetis.com	March 27, 2020 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 We have read the statements made by Rapid Therapeutic Science Laboratories, Inc. under Item 4.01 of its Form 8-K dated March 27, 2020. We agree with the statements concerning our Firm in such Form 8-K. Very truly yours, /s/ Prager Metis CPAs, LLC Prager Metis CPAs, LLC