Nature of Business	6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	1. Nature of Business T2 Biosystems, Inc. and its subsidiary (the “Company,” “we,” or “T2”) have operations based in Lexington, Massachusetts. T2 Biosystems, Inc. was incorporated on April 27, 2006 as a Delaware corporation. The Company is an in vitro diagnostics company that has developed an innovative and proprietary technology platform that offers a rapid, sensitive and simple alternative to existing diagnostic methodologies. The Company has developed a broad set of applications aimed at lowering mortality rates, improving patient outcomes and reducing the cost of healthcare by helping medical professionals make targeted treatment decisions earlier. The Company’s technology enables rapid detection of pathogens, biomarkers and other abnormalities in a variety of unpurified patient sample types, including whole blood, plasma, serum, saliva, sputum, cerebral spinal fluid and urine, and can detect cellular targets at limits of detection as low as one colony forming unit per milliliter (“CFU/mL”). We are currently targeting a range of critically underserved healthcare conditions, focusing initially on those for which a rapid diagnosis will serve an important dual role – saving lives and reducing costs. The Company’s current development efforts primarily target sepsis, bioterrorism and Lyme disease, which are areas of significant unmet medical need in which existing therapies could be more effective with improved diagnostics. Liquidity and Going Concern On June 30, 2024, the Company had cash, cash equivalents, and restricted cash of $4.8 million, an accumulated deficit of $606.8 million, stockholders’ deficit of $5.9 million, and has experienced cash outflows from operating activities since its inception. The future success of the Company is dependent on its ability to successfully commercialize its products, obtain regulatory clearance for and successfully launch its future product candidates, obtain additional capital and ultimately attain profitable operations. Historically, the Company has funded its operations primarily through public equity and private debt financings, including the Company's August 2014 initial public offering, the December 2015 public offering, the September 2016 private investment in public equity (“PIPE”) financing, the September 2017 public offering, the June 2018 public offering, the July 2019 establishment of an equity distribution agreement and equity purchase agreement, the March 2021 establishment of an Equity Distribution Agreement (Note 9), the February 2023 public offering (Note 8), the May 2024 private offering (Note 8), private placements of redeemable convertible preferred stock and through debt financing arrangements. The Company believes its cash position is insufficient to fund future operations without financings by mid-third quarter 2024, which may include public or private equity or debt financings. These financings may not be successful, however, or on terms favorable to the Company or its stockholders, which would have a negative impact on the Company’s business, results of operations, financial condition and the Company’s ability to develop and commercialize its products and ultimately operate as a going concern. The Company is subject to a number of risks similar to other early commercial stage life science companies, including, but not limited to commercially launching the Company’s products, development and market acceptance of the Company’s product candidates, development by its competitors of new technological innovations, protection of proprietary technology, and raising additional capital. In September 2023, the Company’s milestone-based product development contract with the Biomedical Advanced Research and Development Authority (“BARDA”) (Note 12) expired, which may impact the Company’s ability to continue to fund the development of its next-generation products. The Company’s T2Dx Instrument and T2Candida, T2Bacteria, and the T2Biothreat Panels are authorized for use in the United States by the U.S. Food and Drug Administration (“FDA”). Pursuant to the requirements of Accounting Standards Codification 205-40, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASC 205-40”), management must evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management’s plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists under this methodology, management evaluates whether the mitigating effect of its plans sufficiently alleviates substantial doubt about the Company’s ability to continue as a going concern. The mitigating effect of management’s plans, however, is only considered if both (1) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued, and (2) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. The Company believes that its cash, cash equivalents, and restricted cash of $4.8 million on June 30, 2024 will not be sufficient to fund its current operating plan for at least one year from issuance of these financial statements, as certain elements of its operating plan cannot be considered probable. Absent any reductions in current operating expenses, the Company believes it will require additional financing by mid-third quarter of 2024, which may include public or private equity or debt financings. Under ASC 205-40, the future receipt of potential funding from co-development partners and other resources cannot be considered probable at this time because none of the plans are entirely within the Company’s control. The Company's Term Loan Agreement (the “Term Loan Agreement”) with certain entities managed by CR Group L.P., a Delaware limited partnership (each entity, a “CRG entity” and collectively, “CRG”) (Note 6) has a minimum liquidity covenant, which initially required the Company to maintain a minimum cash balance of $5.0 million. In May 2023, CRG reduced the minimum liquidity covenant under the Term Loan Agreement from $5.0 million to $500,000 until December 31, 2023. In July 2023, April 2024, and May 2024, the Company converted $10.0 million, $15.0 million, and $15.0 million, respectively, of the outstanding debt principal with CRG to equity. In October 2023, the Term Loan Agreement was amended to extend both the interest-only period and the maturity date by one year from December 30, 2024 to December 31, 2025, and permanently reduce the minimum liquidity covenant from $5.0 million to $500,000. There can be no assurances that the Company will continue to be in compliance with the cash covenant in future periods without additional funding. On March 30, 2023, the Company received notice from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that, for the last thirty consecutive business days, the bid price for the Company’s common stock had closed below the minimum $1.00 per share requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule 555(a)(2) (the “Minimum Bid Price Rule”). On May 23, 2023, Nasdaq notified the Company that its securities were subject to delisting due to non-compliance with the Minimum Bid Price Rule and to maintain a minimum value of listed securities (the “MVLS Rule”) of at least $35 million. The Company requested a hearing with Nasdaq and, on July 6, 2023, appealed to the Nasdaq Hearings Panel for an extension to the time period in which to regain compliance with the MVLS Rule and the Minimum Bid Price Rule. On July 26, 2023, we filed a definitive proxy statement to effect a reverse stock split of our common stock in connection with our annual meeting that occurred in September 2023 as required by the Nasdaq Hearings Panel. On August 9, 2023, the Company received written notice from Nasdaq informing the Company that it had regained compliance with the MVLS Rule. On September 15, 2023, at the Company’s annual meeting of stockholders, the Company’s stockholders approved an amendment to the Company’s restated certificate of incorporation to effect a reverse stock split of the Company’s common stock. On October 12, 2023, the Company announced that its board of directors had approved the reverse stock split at the ratio of 1 post-split share for every 100 pre-split shares, which was effective as of October 12, 2023. On October 31, 2023, the Company received written notice from Nasdaq informing the Company that it has regained compliance with the Minimum Bid Price Rule. The Company will be subject to a Mandatory Panel Monitor for a period of one year. If, within that one-year monitoring period, the Company fails to comply with the Minimum Bid Price Rule, the Company will not be permitted additional time to regain compliance with the Minimum Bid Price Rule. However, the Company will have an opportunity to request a new hearing with the Nasdaq Listing Qualifications Hearing Panel prior to the Company’s securities being delisted from Nasdaq. On November 20, 2023, the Company received written notice from Nasdaq informing the Company that it no longer satisfied the MVLS Rule. In accordance with the terms of the Mandatory Panel Monitor, the Company was not granted a grace period but rather issued a delist determination, which will be stayed if the Company exercises its right to appeal by requesting a hearing and paying a non-refundable $20,000 fee. The Company paid the $20,000 applicable fee and requested a new hearing, which will stay any further action by Nasdaq at least pending the issuance of its decision and the expiration of any extension that may be granted to the Company as a result of the hearing. The Company’s common stock will remain listed and eligible to trade on Nasdaq pending the outcome of the hearing. On February 15, 2024, the Company appealed to the Nasdaq Hearings Panel for an extension to the time period in which to regain compliance with the MVLS Rule. On March 11, 2024, the Company received notice from the Nasdaq Hearings Panel that it had granted the Company’s request for continued listing on Nasdaq, subject to the Company demonstrating compliance with Nasdaq’s MVLS Rule on or before May 20, 2024. On May 21, 2024, the Company received written notice from Nasdaq informing the Company that it has regained compliance with the MVLS Rule for continued listing on the Nasdaq Capital Market. These conditions raise substantial doubt regarding the Company’s ability to continue as a going concern for a period of one year after the date that the financial statements are issued. Management's plans to alleviate the conditions that raise substantial doubt include raising additional funding, delaying certain research projects and capital expenditures, and eliminating certain future operating expenses in order to fund operations at reduced levels for the Company to continue as a going concern for a period of 12 months from the date these audited consolidated financial statements are issued. Management has concluded the likelihood that its plan to successfully obtain sufficient funding from one or more of these sources or maintain reduced expenditures, while reasonably possible, is less than probable. Accordingly, the Company has concluded that substantial doubt exists about the Company’s ability to continue as a going concern for a period of at least 12 months from the date of issuance of these financial statements. The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of the uncertainties described above.

Nature of Business

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Nature of Business

T2 Biosystems, Inc. and its subsidiary (the “Company,” “we,” or “T2”) have operations based in Lexington, Massachusetts. T2 Biosystems, Inc. was incorporated on April 27, 2006 as a Delaware corporation. The Company is an in vitro diagnostics company that has developed an innovative and proprietary technology platform that offers a rapid, sensitive and simple alternative to existing diagnostic methodologies. The Company has developed a broad set of applications aimed at lowering mortality rates, improving patient outcomes and reducing the cost of healthcare by helping medical professionals make targeted treatment decisions earlier. The Company’s technology enables rapid detection of pathogens, biomarkers and other abnormalities in a variety of unpurified patient sample types, including whole blood, plasma, serum, saliva, sputum, cerebral spinal fluid and urine, and can detect cellular targets at limits of detection as low as one colony forming unit per milliliter (“CFU/mL”). We are currently targeting a range of critically underserved healthcare conditions, focusing initially on those for which a rapid diagnosis will serve an important dual role – saving lives and reducing costs. The Company’s current development efforts primarily target sepsis, bioterrorism and Lyme disease, which are areas of significant unmet medical need in which existing therapies could be more effective with improved diagnostics.

Liquidity and Going Concern

On June 30, 2024, the Company had cash, cash equivalents, and restricted cash of $4.8 million, an accumulated deficit of $606.8 million, stockholders’ deficit of $5.9 million, and has experienced cash outflows from operating activities since its inception. The future success of the Company is dependent on its ability to successfully commercialize its products, obtain regulatory clearance for and successfully launch its future product candidates, obtain additional capital and ultimately attain profitable operations. Historically, the Company has funded its operations primarily through public equity and private debt financings, including the Company's August 2014 initial public offering, the December 2015 public offering, the September 2016 private investment in public equity (“PIPE”) financing, the September 2017 public offering, the June 2018 public offering, the July 2019 establishment of an equity distribution agreement and equity purchase agreement, the March 2021 establishment of an Equity Distribution Agreement (Note 9), the February 2023 public offering (Note 8), the May 2024 private offering (Note 8), private placements of redeemable convertible preferred stock and through debt financing arrangements.

The Company believes its cash position is insufficient to fund future operations without financings by mid-third quarter 2024, which may include public or private equity or debt financings. These financings may not be successful, however, or on terms favorable to the Company or its stockholders, which would have a negative impact on the Company’s business, results of operations, financial condition and the Company’s ability to develop and commercialize its products and ultimately operate as a going concern.

The Company is subject to a number of risks similar to other early commercial stage life science companies, including, but not limited to commercially launching the Company’s products, development and market acceptance of the Company’s product candidates, development by its competitors of new technological innovations, protection of proprietary technology, and raising additional capital.

In September 2023, the Company’s milestone-based product development contract with the Biomedical Advanced Research and Development Authority (“BARDA”) (Note 12) expired, which may impact the Company’s ability to continue to fund the development of its next-generation products.

The Company’s T2Dx Instrument and T2Candida, T2Bacteria, and the T2Biothreat Panels are authorized for use in the United States by the U.S. Food and Drug Administration (“FDA”).

Pursuant to the requirements of Accounting Standards Codification 205-40, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASC 205-40”), management must evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management’s plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists under this methodology, management evaluates whether the mitigating effect of its plans sufficiently alleviates substantial doubt about the Company’s ability to continue as a going concern. The mitigating effect of management’s plans, however, is only considered if both (1) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued, and (2) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued.

The Company believes that its cash, cash equivalents, and restricted cash of $4.8 million on June 30, 2024 will not be sufficient to fund its current operating plan for at least one year from issuance of these financial statements, as certain elements of its operating plan cannot be considered probable. Absent any reductions in current operating expenses, the Company believes it will require additional financing by mid-third quarter of 2024, which may include public or private equity or debt financings. Under ASC 205-40, the future receipt of potential funding from co-development partners and other resources cannot be considered probable at this time because none of the plans are entirely within the Company’s control.

The Company's Term Loan Agreement (the “Term Loan Agreement”) with certain entities managed by CR Group L.P., a Delaware limited partnership (each entity, a “CRG entity” and collectively, “CRG”) (Note 6) has a minimum liquidity covenant, which initially required the Company to maintain a minimum cash balance of $5.0 million. In May 2023, CRG reduced the minimum liquidity covenant under the Term Loan Agreement from $5.0 million to $500,000 until December 31, 2023. In July 2023, April 2024, and May 2024, the Company converted $10.0 million, $15.0 million, and $15.0 million, respectively, of the outstanding debt principal with CRG to equity. In October 2023, the Term Loan Agreement was amended to extend both the interest-only period and the maturity date by one year from December 30, 2024 to December 31, 2025, and permanently reduce the minimum liquidity covenant from $5.0 million to $500,000. There can be no assurances that the Company will continue to be in compliance with the cash covenant in future periods without additional funding.

On March 30, 2023, the Company received notice from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that, for the last thirty consecutive business days, the bid price for the Company’s common stock had closed below the minimum $1.00 per share requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule 555(a)(2) (the “Minimum Bid Price Rule”). On May 23, 2023, Nasdaq notified the Company that its securities were subject to delisting due to non-compliance with the Minimum Bid Price Rule and to maintain a minimum value of listed securities (the “MVLS Rule”) of at least $35 million. The Company requested a hearing with Nasdaq and, on July 6, 2023, appealed to the Nasdaq Hearings Panel for an extension to the time period in which to regain compliance with the MVLS Rule and the Minimum Bid Price Rule. On July 26, 2023, we filed a definitive proxy statement to effect a reverse stock split of our common stock in connection with our annual meeting that occurred in September 2023 as required by the Nasdaq Hearings Panel. On August 9, 2023, the Company received written notice from Nasdaq informing the Company that it had regained compliance with the MVLS Rule. On September 15, 2023, at the Company’s annual meeting of stockholders, the Company’s stockholders approved an amendment to the Company’s restated certificate of incorporation to effect a reverse stock split of the Company’s common stock. On October 12, 2023, the Company announced that its board of directors had approved the reverse stock split at the ratio of 1 post-split share for every 100 pre-split shares, which was effective as of October 12, 2023.

On October 31, 2023, the Company received written notice from Nasdaq informing the Company that it has regained compliance with the Minimum Bid Price Rule. The Company will be subject to a Mandatory Panel Monitor for a period of one year. If, within that one-year monitoring period, the Company fails to comply with the Minimum Bid Price Rule, the Company will not be permitted additional time to regain compliance with the Minimum Bid Price Rule. However, the Company will have an opportunity to request a new hearing with the Nasdaq Listing Qualifications Hearing Panel prior to the Company’s securities being delisted from Nasdaq.

On November 20, 2023, the Company received written notice from Nasdaq informing the Company that it no longer satisfied the MVLS Rule. In accordance with the terms of the Mandatory Panel Monitor, the Company was not granted a grace period but rather issued a delist determination, which will be stayed if the Company exercises its right to appeal by requesting a hearing and paying a non-refundable $20,000 fee. The Company paid the $20,000 applicable fee and requested a new hearing, which will stay any further action by Nasdaq at least pending the issuance of its decision and the expiration of any extension that may be granted to the Company as a result of the hearing. The Company’s common stock will remain listed and eligible to trade on Nasdaq pending the outcome of the hearing. On February 15, 2024, the Company appealed to the Nasdaq Hearings Panel for an extension to the time period in which to regain compliance with the MVLS Rule. On March 11, 2024, the Company received notice from the Nasdaq Hearings Panel that it had granted the Company’s request for continued listing on Nasdaq, subject to the Company demonstrating compliance with Nasdaq’s MVLS Rule on or before May 20, 2024. On May 21, 2024, the Company received written notice from Nasdaq informing the Company that it has regained compliance with the MVLS Rule for continued listing on the Nasdaq Capital Market.

These conditions raise substantial doubt regarding the Company’s ability to continue as a going concern for a period of one year after the date that the financial statements are issued. Management's plans to alleviate the conditions that raise substantial doubt include raising additional funding, delaying certain research projects and capital expenditures, and eliminating certain future operating expenses in order to fund operations at reduced levels for the Company to continue as a going concern for a period of 12 months from the date these audited consolidated financial statements are issued. Management has concluded the likelihood that its plan to successfully obtain sufficient funding from one or more of these sources or maintain reduced expenditures, while reasonably possible, is less than probable. Accordingly, the Company has concluded that substantial doubt exists about the Company’s ability to continue as a going concern for a period of at least 12 months from the date of issuance of these financial statements.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of the uncertainties described above.