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Revenue and Accounts Receivable Credit Concentration | 6 Months Ended
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Jun. 30, 2025
Revenue from Contract with Customer [Abstract] |
Revenue and Accounts Receivable Credit Concentration | Note 9 – Revenue and Accounts Receivable Credit Concentration We derive our revenue from two sources: (i) Diagnostic Tests, providing lung diagnostic testing services for healthcare providers associated with our five blood-based tests and (ii) Development Services, providing diagnostic testing services to biopharmaceutical, life sciences, and diagnostic companies. Diagnostic Tests revenues consist of blood-based lung tests which are recognized in the amount expected to be received in exchange for diagnostic tests when the diagnostic tests are delivered. The Company conducts diagnostic tests and delivers the completed test results to the prescribing physician. The fees for diagnostic tests are billed either to a third party such as Medicare, medical facilities, commercial insurance payers, or to the patient. The Company determines the transaction price related to its diagnostic test contracts by considering the nature of the payer, test type, and historical price concessions granted to groups of customers. For diagnostic test revenue, the Company estimates the transaction price, which is the amount of consideration it expects to be entitled to receive in exchange for providing services based on its historical collection experience, using a portfolio approach. The Company recognizes revenues for diagnostic tests upon delivery of the tests to the physicians requesting the tests. Development Services revenue is generated from the delivery of our on-market tests, pipeline tests, custom diagnostic testing, and other scientific services from contracts and business agreements with other diagnostics and life science tool partners for a purpose as defined by any individual customer, which is often with biopharmaceutical companies. The performance obligations and related revenue for these sales is defined by a written agreement between the Company and the customer. These services are generally completed upon the delivery of testing results, achievement of contractual milestone(s) as defined in the customer agreements, or over the term of the contract which is generally expected to be completed in one year or less. Revenue for these services is recognized upon delivery of the completed test results, upon completion of the contractual milestone(s), or over the term of the contract. Revenues consisted of the following (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Diagnostic Tests |  | $ | 17,898 |  |  | $ | 16,539 |  |  | $ | 34,215 |  |  | $ | 30,335 |
Development Services |  |  | 2,120 |  |  |  | 1,386 |  |  |  | 3,761 |  |  |  | 2,408 |
Total revenues |  | $ | 20,018 |  |  | $ | 17,925 |  |  | $ | 37,976 |  |  | $ | 32,743 |
Deferred Revenue Deferred revenue consists of cash payments from customers received in advance of delivery. As test results are delivered, the Company recognizes the deferred revenue in ‘R evenues’ in the condensed statements of operations. The Company had $0.7 million in ‘Deferred revenue’ recorded in the condensed balance sheet as of December 31, 2024 and $0.7 million was added throughout 2025 to ‘Deferred revenue’ for up-front cash payments while $0.8 million was recognized in revenues during the six months ended June 30, 2025. The ‘Deferred revenue’ of $0.6 million recorded in the condensed balance sheet as of June 30, 2025 is expected to be recognized in revenues over the next twelve months as test results are delivered and services are performed. As of June 30, 2025 and December 31, 2024, the Company had $0.2 million in non-current deferred revenue, respectively, recorded within ‘Other long-term liabilities’ in the condensed balance sheets which represent amounts to be recognized in excess of twelve months from the respective balance sheet date. The Company’s customers in excess of 10% of total revenue and their related revenue as a percentage of total revenue were as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
United Healthcare |  |  | 11 | % |  |  | 13 | % |  |  | 6 | % |  |  | 12 | %
In addition to the above table, we collect reimbursement on behalf of cu stomers covered by Medicare, which accounted for 33% and 35% of the Company’s total revenue for the three and six months ended June 30, 2025 compared to 41% for both the three and six months ended June 30, 2024, respectively. The Company is subject to credit risk from its accounts receivable related to services provided to its customers. The Company’s third-party payors and other customers in excess of 10% of accounts receivable, and their related accounts receivable as a percentage of total accounts receivable were as follows:
|  | As of |  |
|  | June 30, 2025 |  |  | December 31, 2024 |  |
Medicare |  |  | 24 | % |  |  | 21 | % |
Daiichi Sankyo |  |  | — | % |  |  | 14 | % |

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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