Reconciliation of Stockholders' (Deficit) Equity (Unaudited) - USD ($)	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Equity Attributable to Internat’l Isotopes Shareholders	Equity Attributable to Noncontrolling Interest	Total
Beginning balance, value at Dec. 31, 2019	$ 4,198,423	$ 121,680,163	$ (128,064,385)	$ (2,185,799)	$ 2,073,649	$ (112,150)
Shares outstanding at Dec. 31, 2019	419,842,256
Shares issued under employee stock purchase plan	$ 3,036	10,394		13,430		13,430
Shares issued under employee stock purchase plan, shares	303,610
Stock grant	$ 3,021	(3,021)
Stock grant, shares	302,125
Stock in lieu of dividends on convertible preferred C	$ 34,080	170,400		204,480		204,480
Stock in lieu of dividends on convertible preferred C, shares	3,408,000
Shares issued for exercise of employee stock options	$ 4,167	(4,167)
Shares issued for exercise of employee stock options, shares	416,667
Stock based compensation		80,203		80,203		80,203
Distribution to non-controlling interest
Net income			113,884	113,884	168,790	282,674
Ending balance, value at Sep. 30, 2020	$ 4,242,727	122,181,532	(127,950,501)	(1,526,242)	2,242,439	716,197
Shares outstanding at Sep. 30, 2020	424,272,658
Convertible debentures beneficial conversion feature		102,584		102,584		102,584
Warrants issued with convertible debentures		144,976		144,976		144,976
Beginning balance, value at Jun. 30, 2020	$ 4,237,941	122,171,489	(128,257,551)	(1,848,121)	2,156,976	308,855
Shares outstanding at Jun. 30, 2020	423,794,088
Shares issued under employee stock purchase plan	$ 619	2,538		3,157		3,157
Shares issued under employee stock purchase plan, shares	61,903
Shares issued for exercise of employee stock options	$ 4,167	(4,167)
Shares issued for exercise of employee stock options, shares	416,667
Stock based compensation		11,672		11,672		11,672
Net income			307,050	307,050	85,463	392,513
Ending balance, value at Sep. 30, 2020	$ 4,242,727	122,181,532	(127,950,501)	(1,526,242)	2,242,439	716,197
Shares outstanding at Sep. 30, 2020	424,272,658
Beginning balance, value at Dec. 31, 2020	$ 4,243,443	122,191,837	(125,861,734)	573,546	2,313,706	2,887,252
Shares outstanding at Dec. 31, 2020	424,344,298
Shares issued under employee stock purchase plan	$ 2,561	10,966		13,527		13,527
Shares issued under employee stock purchase plan, shares	256,079
Stock grant	$ 1,183	(1,183)		0		0
Stock grant, shares	118,315
Stock in lieu of dividends on convertible preferred C	$ 13,982	193,498		207,480		207,480
Stock in lieu of dividends on convertible preferred C, shares	1,398,200
Shares issued for exercise of employee stock options	$ 19,082	(19,082)
Shares issued for exercise of employee stock options, shares	1,908,198					2,262,500
Warrant exercise	$ 326,214	(326,214)
Warrant exercise, shares	32,621,409
Conversion of preferred C stock	$ 15,000	135,000		150,000		150,000
Conversion of preferred C stock, shares	1,500,000
Conversion of preferred B stock	$ 875	174,125		175,000		175,000
Conversion of preferred B stock, shares	87,500
Stock based compensation		60,671		60,671		60,671
Shares issued for purchase of 75.5% of RadQual	$ 401,762	2,021,900		2,423,662	(2,423,662)
Shares issued for purchase of 75.5% of RadQual, shares	40,176,236
Distribution to non-controlling interest					(3,431)	(3,431)
Net income			(919,408)	(919,408)	113,387	(806,021)
Ending balance, value at Sep. 30, 2021	$ 5,024,102	124,441,518	(126,781,142)	2,684,478		2,684,478
Shares outstanding at Sep. 30, 2021	502,410,235
Beginning balance, value at Jun. 30, 2021	$ 4,608,305	122,292,543	(126,644,273)	256,575	2,426,249	2,682,824
Shares outstanding at Jun. 30, 2021	460,830,469
Shares issued under employee stock purchase plan	$ 444	4,088		4,532		4,532
Shares issued under employee stock purchase plan, shares	44,439
Shares issued for exercise of employee stock options	$ 1,091	(1,091)
Shares issued for exercise of employee stock options, shares	109,091
Conversion of preferred C stock	$ 12,500	112,500		125,000		125,000
Conversion of preferred C stock, shares	1,250,000
Stock based compensation		11,578		11,578		11,578
Shares issued for purchase of 75.5% of RadQual	$ 401,762	2,021,900		2,423,662	(2,423,662)
Shares issued for purchase of 75.5% of RadQual, shares	40,176,236
Distribution to non-controlling interest					(3,431)	(3,431)
Net income			(136,869)	(136,869)	844	(136,025)
Ending balance, value at Sep. 30, 2021	$ 5,024,102	$ 124,441,518	$ (126,781,142)	$ 2,684,478		$ 2,684,478
Shares outstanding at Sep. 30, 2021	502,410,235