Revenue and Accounts Receivable Credit Concentration - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($) Test	Dec. 31, 2023 USD ($)
Disaggregation Of Revenue [Line Items]
Sources of revenue, description	We derive our revenue from two sources: (i) Lung Diagnostic Testing, 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.
Revenue recognized	$ 900
Deferred revenue	$ 678	$ 324
Number of blood based lung cancer test \| Test	5
Revenue \| Minimum \| Customer Concentration Risk \| Medicare
Disaggregation Of Revenue [Line Items]
Concentration risk, percentage	39.00%	43.00%
Other Long-term Liabilities
Disaggregation Of Revenue [Line Items]
Non-current deferred revenue	$ 200	$ 300
Up Front Cash Payments
Disaggregation Of Revenue [Line Items]
Deferred revenue	$ 1,300

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