Derivative Financial Instruments - Warrants (Tables) - Black Scholes Option Pricing Method

12 Months Ended

Dec. 31, 2019

Derivative financial instruments

Schedule of Assumptions Used to Determine the Fair Value of Warrants

The range of assumptions used to determine the fair value of the warrants valued using the Black-Scholes option pricing model during the periods indicated was:

	Year ended December 31,
	2019	2018
Fair value of Trovagene common stock	$1.24 - $3.75	$3.15 - $25.14
Expected warrant term	3.1 - 4.1 years	0 - 5.1 years
Risk-free interest rate	1.56% - 2.49%	1.76% - 2.92%
Expected volatility	102% - 111%	47% - 131%
Dividend yield	—%	—%

Schedule of Components of Changes in the Company’s Derivative Financial Instruments Liability Balance

The following table sets forth the components of changes in the Company’s derivative financial instruments—warrants liability balance, valued using the Black-Scholes option pricing method, for the periods indicated.

Date	Description	Number of Warrants		Derivative Instrument Liability
December 31, 2017	Balance of derivative financial instruments—warrants liability	77,942		$	649,387
	Expiration of derivative financial instruments	(13,446	)	—
	Change in fair value of derivative financial instruments—warrants during the year recognized as a gain in the statement of operations	—		(617,072		)
December 31, 2018	Balance of derivative financial instruments—warrants liability	64,496		32,315
	Change in fair value of derivative financial instruments—warrants during the year recognized as a gain in the statement of operations	—		(28,188		)
December 31, 2019	Balance of derivative financial instruments—warrants liability	64,496		$	4,127