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COMMITMENTS AND CONTINGENCIES (Details Narrative)
 12 Months Ended
May 31, 2023
USD ($)
ft²
May 31, 2023
USD ($)
ft²
May 31, 2022
USD ($)
Mar. 31, 2023
USD ($)
Sep. 30, 2017
USD ($)
Nov. 30, 2016
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Operating lease description the Company had approximately 22,000 square feet of floor space at its corporate headquarters at 17571 Von Karman Avenue in Irvine, California. The lease for its headquarters expires in August 2026. The Company has the option to extend the lease for an additional five-year term          
Operating lease term           10 years
Lease area | ft² 8,100 8,100        
Operating lease renewal term           10 years
Accrued liabilities $ 548,000 $ 548,000 $ 236,000      
University Of Southern California [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Clinical trial agreement maximum budgeted costs         $ 82,000  
Accrued liabilities     17,000      
Biomerica in Foods [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Clinical trial agreement maximum budgeted costs     107,000      
Accrued liabilities     28,000      
Royalty Agreements [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Royalty expense   $ 13,000 $ 19,000      
Royalty expense percentage of sales   2.10% 1.50%      
Building in Irvine California [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Security deposit       $ 22,000