Diagnostic Accuracy Study for OWL-EVO1 as a Lung Cancer EVOC® Probe (Evolution Phase 2)

Inclusion Criteria: * Aged 45-85 years. * Ability to provide informed consent. * BMI 16 - \<40. * Receiving a CT including the thoracic region, within the last 6 months. Exclusion Criteria: 1. (Anticipated) inability to complete the breath sampling procedure (e.g., inability to maintain adequate ventilation unaided or claustrophobia). 2. Potential subjects who in the opinion of the investigator lack mental capacity. 3. Received an investigational medical product in the context of a Clinical Trial (CTIMP) during the 28 days prior to administration of the (first) probe, or within 5 times the half-life of the investigational medicinal product previously received, whichever is longer.\* 4. Individuals under diagnostic investigation for a potential malignancy other than lung cancer that has not yet reached a conclusive diagnosis\*\*. 5. Individuals with an inconclusive lung abnormality (indeterminate pulmonary nodule) on CT-scan requiring CT-based monitoring rather than biopsy and/or treatment. 6. Documented history of pulmonary surgery or endobronchial interventional procedures other than biopsy, lavage, or bronchial brushings. These include surgical resection, Video Assisted Thoracic Surgery (VATS), bronchial thermoplasty and coiling, airway stenting or other interventional bronchoscopic procedures. 7. Pregnant or breastfeeding women and women of child-bearing potential not using adequate contraceptive methods (Subjects must agree to use contraception for 2 months post last dose). 8. Individuals under investigation for suspicion of lung cancer who are unlikely to receive a definitive tissue diagnosis of lung cancer prior to treatment (e.g. stereotactic ablative radiotherapy without tissue confirmation). * Note: In the case that the participant has taken part in a study with an investigational medicinal product please contact the Owlstone medical monitor for advice. \*\*Note: Individuals with a confirmed cancer diagnosis ARE eligible (such as a diagnosis of prostate cancer now undergoing hormone therapy). Individual with a previous history of cancer other than lung cancer, including those under active surveillance, ARE eligible. Individuals scheduled to attend a cancer screening program; prostate, breast, lung, colon, ARE eligible.