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Basis of Presentation and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Apr. 20, 2023
Product Information [Line Items]          
Increase (Decrease) in Asset, Held-for-Sale $ (421,000)      
Inventory write down     $ 400,000    
Asset impairment charges 1,300,000        
Assets held for sale $ 421,000      
Long-lived intangible assets, useful life 5 years        
Provision for doubtful accounts $ 200,000     200,000  
Fair value of equity securities $ 553,000     $ 433,000  
Lineage and AgeX [Member]          
Product Information [Line Items]          
Common Stock, Shares Held as Available for Sale Securities 353,264     35,326  
Fair value of equity securities $ 500,000     $ 23,000  
Pharma Services [Member]          
Product Information [Line Items]          
Accounts receivable 200,000     $ 300,000  
Medicare for Determa Rx and Medicare Advantage for Determa Rx [Member]          
Product Information [Line Items]          
Accounts receivable 1,800,000        
Various Agreements [Member]          
Product Information [Line Items]          
Increase (Decrease) in Asset, Held-for-Sale 600,000        
Laboratory Equipment Agreement [Member]          
Product Information [Line Items]          
Assets held for sale $ 200,000       $ 200,000