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Condensed Consolidated Balance Sheets - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Current assets    
Cash and cash equivalents $ 4,453,521 $ 4,015,128
Marketable securities 2,499,685 5,933,364
Accounts receivable, net of allowance for doubtful accounts of $6,016 29,514 30,714
Other receivables 60,000 34,965
Inventory 246,904 224,155
Prepaid expenses 222,831 186,056
Total current assets 7,512,455 10,424,382
Other assets    
Property and equipment, net 548,966 265,267
Operating lease right-of-use asset 1,161,743
Other assets 127,759 50,488
Total assets 9,350,923 10,740,137
Current liabilities    
Accounts payable 583,573 871,364
Accrued expenses 304,101 311,405
Non-convertible promissory notes - current   1,375,000
Current portion of operating lease liability 83,145
Total current liabilities 970,819 2,557,769
Non-current liabilities    
Operating lease liability, less current portion 1,491,649
Non-convertible promissory notes - long-term 1,375,000  
Total liabilities 3,837,468 2,557,769
Commitments and contingencies (Note 11)
Stockholders’ equity    
Preferred stock, $0.00001 par value; 20,000,000 shares authorized; 0 shares issued and outstanding
Common stock, $0.00001 par value; 80,000,000 shares authorized; 11,886,379 shares issued and outstanding 119 119
Additional paid-in capital 22,786,005 22,596,100
Accumulated deficit (17,272,669) (14,413,851)
Total stockholders’ equity 5,513,455 8,182,368
Total liabilities and stockholders’ equity $ 9,350,923 $ 10,740,137