SIGNIFICANT ACCOUNTING POLICIES (Details) - Revenue from contracts with customers - USD ($)	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue From Customers	$ 1,637,000	$ 1,262,000
Clinical Lab [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	1,146,000	886,000
Over-the-counter [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	213,000	79,000
Physicians Office [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	183,000	257,000
Contract Manufacturing [Member]
Disaggregation of Revenue [Line Items]
Revenue From Customers	$ 95,000	$ 40,000