Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2021
May 11, 2021
Cover [Abstract]    
Entity Registrant Name Co-Diagnostics, Inc.  
Entity Central Index Key 0001692415  
Document Type 10-Q  
Document Period End Date Mar. 31, 2021  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   28,666,972
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2021