SIGNIFICANT ACCOUNTING POLICIES (Details) - Revenue from contracts with customers - USD ($)	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue From Customers	$ 1,143,806	$ 1,194,415
Clinical Lab [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	581,708	890,152
OTC [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	184,908	199,209
Physicians Office [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	197,331	45,222
Contract Manufacturing [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	$ 179,859	$ 59,832