Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Significant Accounting Policies	2. Basis of Presentation and Significant Accounting Policies Basis of Presentation The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and in conformity with accounting principles generally accepted in the United States of America (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to the authoritative United States generally accepted accounting principles as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”). The condensed consolidated financial statements do not include all the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with Legacy Comera’s consolidated financial statements and related notes for the year ended December 31, 2021 included in the definitive proxy statement/prospectus filed with the SEC on April 15, 2022. The financial information as of June 30, 2022 and 2021, and the three and six months ended June 30, 2022 and 2021, is unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments considered necessary for the fair presentation of financial position, results of operations, and cash flows at the dates and for the periods presented, have been included. The balance sheet data as of December 31, 2021 was derived from Legacy Comera’s audited consolidated financial statements. The results of the Company’s operations for any interim periods are not necessarily indicative of the results that may be expected for any other interim period or for a full fiscal year. Emerging Growth Company and Smaller Reporting Company Status The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act of 1933 (the “Securities Act”), as modified by the Jumpstart Our Business Startups Act of 2012, (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Securities Exchange Act of 1934) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s consolidated financial statements with another public company which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. The Company is also a “smaller reporting company” as defined in the Securities Exchange Act of 1934 (the “Exchange Act”). The Company may continue to be a smaller reporting company even after the Company is no longer an emerging growth company. The Company may take advantage of certain of the scaled disclosures available to smaller reporting companies and will be able to take advantage of these scaled disclosures for so long as the market value of the Company’s voting and non-voting Common Stock held by non-affiliates is less than $250.0 million measured on the last business day of the Company’s second fiscal quarter, or the Company’s annual revenue is less than $100.0 million during the most recently completed fiscal year and the market value of the Company’s voting and non-voting Common Stock held by non-affiliates is less than $700.0 million measured on the last business day of the Company’s second fiscal quarter. Risks and Uncertainties The Company is subject to risks and uncertainties common to early-stage companies in the biotechnology industry, including but not limited to, risks associated with completing preclinical studies and clinical trials, receiving regulatory approvals for product candidates, development by competitors of new biopharmaceutical products, dependence on key personnel, protection of proprietary technology, compliance with government regulations, entering into collaborations with partners for the Company’s SQoreTM platform and the ability to secure additional capital to fund operations. Significant discovery, research and development efforts, including clinical testing and regulatory approval, are required prior to commercialization of any potential product candidates. These efforts require significant amounts of additional capital, adequate personnel and infrastructure and extensive compliance-reporting capabilities. Even if the Company’s product development efforts are successful, it is uncertain when, if ever, the Company will realize revenue from product sales. Through June 30, 2022, the Company has funded its operations primarily with proceeds from the issuance of equity instruments, convertible notes, and preferred stock. The Company has incurred recurring losses since its inception, including a net loss of $12.0 million for the six months ended June 30, 2022. In addition, as of June 30, 2022, the Company had an accumulated deficit of $28.9 million. The Company expects to continue to generate operating losses for the near future. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations. The Company’s inability to raise capital as and when needed could have a negative impact on its financial condition and ability to pursue its business strategies. There can be no assurance that the current operating plan will be achieved or that additional funding will be available on terms acceptable to the Company, or at all. The Company does not believe the cash and cash equivalents on hand as of June 30, 2022 of $4.9 million will be sufficient to fund its operations and capital expenditure requirements for the next twelve months from the date the condensed consolidated financial statements are issued. The Company will be required to raise additional capital to continue to fund operations and capital expenditures. Such funding may not be available on acceptable terms, or at all. If the Company is unable to access additional funds when needed, it may not be able to continue operations or the Company may be required to delay, scale back or eliminate some or all of its ongoing research and development efforts and other operations. The Company’s ability to access capital when needed is not assured and, if not achieved on a timely basis, will materially harm its business, financial condition and results of operations. These uncertainties create substantial doubt about the Company’s ability to continue as a going concern. The accompanying condensed consolidated financial statements have been prepared on a basis which assumes that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. COVID-19 In March 2020, COVID-19 was declared a global pandemic by the World Health Organization and continues to present a substantial public health and economic challenge around the world. The length of time and full extent to which the COVID-19 pandemic may directly or indirectly impact the Company’s business, results of operations and financial condition will depend on future developments that are highly uncertain, subject to change and difficult to predict. The Company plans to continue to closely monitor the ongoing impact of the COVID-19 pandemic on the Company’s employees and other business operations. In an effort to provide a safe work environment for the Company’s employees, the Company has, among other things, limited employees in the Company’s office and lab facilities to those where on-site presence is needed for their job activities, implemented various social distancing measures in the Company’s offices and labs and are providing personal protective equipment for the Company’s employees present in the Company’s office and lab facilities, as needed. The Company is continuing to monitor the impact and effects of the COVID-19 pandemic and the Company’s response to it, and the Company expects to continue to take actions as may be required or recommended by government authorities or that are determined to be in the best interests of the Company’s employees and other business partners in light of the pandemic. Use of Estimates The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions, based on judgments considered reasonable, which affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of expenses during the reporting periods. The Company bases its estimates and assumptions on historical experience, known trends and events and various other factors that management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Significant estimates and assumptions reflected in these condensed consolidated financial statements include, but are not limited to, the valuation of the warrant derivative liabilities, Legacy Comera’s common stock, and stock-based compensation. Changes in estimates are recorded in the period in which they become known. Due to the risks and uncertainties involved in the Company’s business and evolving market conditions and, given the subjective element of the estimates and assumptions made, actual results may differ from estimated results. Summary of Significant Accounting Policies The accounting policies of the Company are set forth in Note 2 to the consolidated financial statements included in the definitive proxy statement/prospectus filed with the SEC on April 15, 2022, and the accounting policies followed by the Company for interim financial reporting are consistent with the accounting policies therein and as supplemented below. Reverse Recapitalization The Transaction was accounted for as a reverse recapitalization, with OTR being treated as the “acquired” company and CLS Holdings being treated as the “acquirer” for accounting purposes based upon the pre-merger shareholders of Legacy Comera holding the majority of the voting interests of CLS Holdings, Legacy Comera’s existing management team serving as the initial management team of CLS Holdings, Legacy Comera’s appointment of the majority of the initial board of directors of CLS Holdings, and Legacy Comera’s operations comprising the ongoing operations of the Company. The Transaction was accounted for as the equivalent of CLS Holdings issuing stock for the net assets of OTR, accompanied by a reverse recapitalization. Accordingly, all historical financial information presented in these condensed consolidated financial statements represents the accounts of CLS Holdings and Legacy Comera “as if” CLS Holdings and Legacy Comera, both entities under common control, are the predecessor. The net loss per share or unit, prior to the Transaction, has been adjusted to share amounts reflecting the exchange ratio (the “Exchange Ratio”) established in the Transaction. Convertible Preferred Stock The Company accounts for convertible preferred stock subject to possible redemption in accordance with the guidance in ASC 480, Distinguishing Liabilities from Equity (“ASC 480”). The Series A Preferred Stock is redeemable at the option of the holder upon the occurrence of a qualified financing. As the Series A Preferred Stock is considered to be contingently redeemable, it has been classified outside of permanent equity. The Series A Preferred Stock has been accreted to its redemption value since the contingent event is considered probable of occurring. Derivative Warrant Liabilities The Company classifies as equity any warrants that (i) require physical settlement or net-share settlement or (ii) provide the Company with a choice of net-cash settlement or settlement in its own shares (physical settlement or net-share settlement). The Company classifies as assets or liabilities any warrants that (i) require net-cash settlement (including a requirement to net cash settle the contract if an event occurs and if that event is outside the company’s control), (ii) gives the counterparty a choice of net-cash settlement or settlement in shares (physical settlement or net-share settlement) or (iii) that contain reset provisions that do not qualify for the scope exception. The Company assesses classification of its common stock warrants and other freestanding warrant instrument at each reporting date to determine whether a change in classification between assets and liabilities is required. The Company’s freestanding warrant instruments consist of private placement warrants to purchase 5,817,757 shares of common stock (“Private Placement Warrants”) and public warrants to purchase 5,223,675 shares of common stock (“Public Warrants”) that were converted in connection with the Transaction. Following the Transaction, the Public Warrants are considered equity classified instruments since the shares underlying the Public Warrants are not redeemable and the Company has one single class of voting common stock, which does not preclude them from being considered indexed to the Company’s equity and allows the Public Warrants to meet the criteria for equity classification per ASC 815, Derivatives and Hedging (“ASC 815”). Warrants that are determined to require equity classification are measured at fair value upon issuance and are not subsequently remeasured unless they are required to be reclassified. The Private Placement Warrants are considered liability classified instruments because their settlement amount differs depending on the identity of the holder which precludes them from being considered indexed to the Company’s equity. Accordingly, the Company recognizes the Private Placement Warrants as liabilities at fair value and adjusts the instruments to fair value using quoted prices of instruments with similar terms. The liabilities are subject to re-measurement at each balance sheet date until exercised, and any change in fair value is recognized in the Company’s statements of operations and comprehensive loss. Reclassification of Prior Year Presentation Certain prior year amounts within prepaid expenses and other current assets (Note 5) have been reclassified for consistency with current period presentation. These reclassifications had no effect on the reported results of operations or financial position. Subsequent Events The Company considers events or transactions that occur after the balance sheet date but before the condensed consolidated financial statements are issued to provide evidence relative to certain estimates or to identify matters that require additional disclosure. The Company evaluated all events and transactions through the date these condensed consolidated financial statements were filed with the SEC. Recently Issued Accounting Pronouncements From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by us as of the specified effective date. Unless otherwise discussed, the Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on the Company’s consolidated financial statements and disclosures.