A Case-Control Study to Verify Diagnostic Performance of AminoIndex™ Technology

Inclusion Criteria

All Groups:

* Able to read, understand and sign informed consent to participate in study.
* Willing and able to provide written informed consent.
* Willing and able to meet all study requirements and undergo venipuncture to provide a fasting blood sample.

Group 1:

* Men or women age 18 years or older;
* Lung nodule size ≥ 6 mm but ≤ 35 mm/ lung, nodule or mass.
* Diagnosis of lung cancer based upon histopathology performed on lung nodule, lesion or mass tissue obtained from biopsy or surgical excision performed after study-related fasting blood sample obtained.

Group 2:

* Men or women age 18 years or older;
* Lung nodule size ≥ 6 mm but ≤ 35 mm/ lung nodule, lesion or mass;
* Definitive diagnosis of benign (non-cancerous) lung nodule based upon one of the following:

  * Histopathology performed on lung nodule tissue obtained from biopsy or surgical excision performed after study-related fasting blood sample obtained;
  * No nodule growth for \> 2 years by repeat CT imaging, the most recent being performed within the 60 days prior to signing informed consent.

Group 3:

* Men or women age 55-79 years inclusive;
* Current smoker or quit \< 15 years ago with a \> 30 pack-year smoking history (equivalent of 1 pack per day for 30 or more years)\*.
* Have undergone low-dose computed tomography (LDCT) or standard computed tomography (CT) or X-ray testing to screen for lung cancer with no nodules suspicious for lung cancer within 1 year prior to signing informed consent.

' \* ' One pack year is calculated as follows: 20 cigarettes = 1 pack. One "pack year" is the equivalent of smoking:

* 20 cigarettes (one pack) per day for one year; or
* 40 cigarettes (two packs) per day for 6 months; or
* 60 cigarettes (three packs) per day for 3 months

Exclusion Criteria

* Inability to fast for 8 hours prior to the blood sample collection.
* Known to be positive for HIV and/or, HBV and/or HCV.
* Pregnancy.
* Breastfeeding.
* Currently undergoing dialysis.
* Congenital metabolic disease.
* Currently receiving investigational treatments of any type.
* History of receiving any drug therapy or surgery for the treatment of lung cancer.
* Diagnosis of cancer within past 5 years and/or currently undergoing treatment for any cancer.
* Any clinical condition, diagnosis, or social circumstance that, in the opinion of the Investigator, would be mean participation in the study would be contraindicated.