Unrealized gain on change in fair value of warrants classified as a liability
Unrealized gain on change in fair value of warrants classified as a liability for the six-month periods ended March 31, 2023 and 2022 of $613,100 and $782,500, respectively relates to the change in fair value of the warrants that are classified as a liability. The primary driver of this change is the decrease in our stock price during the period.
Net Loss
Net loss decreased $3,187,638 or 49% to $3,293,070 for the six-month period ended March 31, 2023 compared to $6,480,708 for the six-month period ended March 31, 2022 due to the factors noted above.
Liquidity and Capital Resources
Our liquidity needs consist of our working capital requirements and research and development expenditure funding. As of March 31, 2023, we had working capital of $11,724,175. For the six-month period ended March 31, 2023, we used cash in operating activities of $2,168,718 consisting primarily of our loss of $3,293,070 net with non-cash adjustments of $683,422 in depreciation and amortization charges, $613,100 in unrealized gain on change in fair value of warrants classified as a liability, $352,352 in stock-based compensation expense and $290,022 of bad debt recovery. Additionally, we had a gain on the sale of property and equipment of $6,083, a net decrease in operating assets of $2,024,537 and a net decrease in operating liabilities of $1,026,754. Cash used in investing activities of $9,339, comprised of proceeds from the sale of property and equipment of $45,000, offset by $54,339 for the purchase of property and equipment.
Historically, a majority of our revenue attributable to our MDx Testing Services has been derived from our safeCircle COVID-19 testing solutions. On April 11, 2023, the U.S. National Emergency in response to the COVID-19 pandemic was terminated. While we continue to support several safeCircle customers, we are currently observing a market decrease in demand for COVID-19 testing, which we believe will result in significantly lower revenues from our safeCircle COVID-19 testing solutions in subsequent quarters. On May 1, 2023, we received notice from CUNY, our largest safeCircle COVID-19 testing solution customer, that CUNY is terminating their COVID-19 testing contract with ADCL no later than June 30, 2023 subject to a wind-down plan to be negotiated by the parties. The CUNY COVID-19 testing contract represented 58% of our revenue for fiscal year 2022. These factors could also have a negative impact on the Company’s future liquidity.
We have recurring net losses. We have incurred a net loss of $3,293,070 for the six-month period ended March 31, 2023. Our current capital resources include cash and cash equivalents, accounts receivable and inventories. Historically, we have financed our operations principally from the sale of equity and equity-linked securities. Through March 31, 2023, we have dedicated most of our financial resources to commercialization of our MDx Testing Services, specifically our COVID-19 Testing Services, as well as to research and development efforts focused on the development of our Therapeutic DNA Productions Services, as well as, advancing our intellectual property, and general and administrative activities. We estimate that we will have sufficient cash and cash equivalents to fund operations for the next twelve months from the date of filing of this quarterly report.
We may require additional funds to complete the continued development of our products, services, product manufacturing, and to fund expected additional losses from operations until revenues are sufficient to cover our operating expenses. If revenues are not sufficient to cover our operating expenses, and if we are not successful in obtaining the necessary additional financing, we will most likely be forced to reduce operations.
Critical Accounting Estimates and Policies
Financial Reporting Release No. 60, published by the SEC, recommends that all companies include a discussion of critical accounting policies used in the preparation of their financial statements. While all these significant accounting policies impact our financial condition and results of operations, we view certain of these policies as critical. Policies determined to be critical are those policies that have the most significant impact on our consolidated financial statements and require management to use a greater degree of judgment and estimates. Actual results may differ from those estimates.
We believe that given current facts and circumstances, it is unlikely that applying any other reasonable judgments or estimate methodologies would cause a material effect on our condensed consolidated results of operations, financial position or liquidity for the periods presented in this report.