Evidence-Based Supplement & Herb Guides

ALK Fusion Test for Lung Cancer: Gene Fusion, Positive Result, and Molecular Meaning

Understand ALK fusion testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

An ALK fusion test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

BRAF V600E Test for Lung Cancer: Mutation Status, Positive Result, and Molecular Meaning

Understand BRAF V600E testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

A BRAF V600E test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

CEA Test for Lung Cancer: Tumor Marker Monitoring, High Levels, and Result Meaning

Learn how the carcinoembryonic antigen (CEA) test is used in lung cancer, what high levels can mean, common non-cancer causes, reference ranges, and why serial trends matter.

The carcinoembryonic antigen (CEA) blood test can provide supportive information when a person already has lung cancer, especially when the marker is elevated before...

CYFRA 21-1 Test for Lung Cancer: Tumor Marker Levels and Disease Monitoring

Learn how the cytokeratin 19 fragment 21-1 (CYFRA 21-1) test is used in lung cancer, what high levels can mean, common non-cancer causes, reference ranges, and why serial trends matter.

The cytokeratin 19 fragment 21-1 (CYFRA 21-1) blood test can provide supportive information when a person already has lung cancer, especially when the marker...

EGFR Exon 20 Insertion Test: Lung Cancer Mutation Status and Molecular Meaning

Understand EGFR exon 20 insertion testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

An EGFR exon 20 insertion test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC)...

EGFR Mutation Test for Lung Cancer: Exon 19, L858R, T790M, Mutation Status, and Meaning

Understand EGFR mutation testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

An EGFR mutation test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

EGFR T790M Test: Lung Cancer Resistance Mutation, ctDNA, and Result Meaning

Understand EGFR T790M testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

An EGFR T790M test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

HER2/ERBB2 Mutation Test for Lung Cancer: Mutation Status and HER2 Alteration Meaning

Understand HER2/ERBB2 mutation testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

A HER2/ERBB2 mutation test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

KRAS G12C Test for Lung Cancer: Mutation Status, Positive Result, and Molecular Meaning

Understand KRAS G12C testing in lung cancer, including what a positive or negative result means, tissue and ctDNA methods, limitations, and treatment relevance.

A KRAS G12C test looks for a specific tumor alteration that can help define the biology of non-small cell lung cancer (NSCLC) and, in...

Lung Cancer Biomarker Panel: EGFR, ALK, ROS1, BRAF, MET, RET, NTRK, PD-L1, and Tumor Profile

A lung cancer biomarker panel looks for molecular and protein features that can define the tumor more precisely than histology alone. In non-small cell...

Lung Cancer Liquid Biopsy Test: ctDNA, Mutations, Resistance Markers, and Blood-Based Testing

Learn how lung cancer liquid biopsy uses ctDNA to detect actionable mutations and resistance markers, what positive and negative results mean, and when tissue testing is still needed.

A lung cancer liquid biopsy is a blood-based molecular test that looks for tumor-derived material, most often circulating tumor DNA (ctDNA). It can identify...

Lung Cancer NGS Panel Test: Driver Mutations, Gene Fusions, Resistance Markers, and Molecular Profile

A lung cancer NGS panel is a molecular test that examines many cancer-related genes at the same time. In non-small cell lung cancer (NSCLC),...

Lung Cancer Resistance Mutation Panel: EGFR, ALK, ROS1, MET, and Resistance Markers

Learn how lung cancer resistance mutation panels detect EGFR, ALK, ROS1, MET, and other resistance mechanisms, how blood and tissue testing differ, and what positive or negative results mean.

A lung cancer resistance mutation panel is a molecular test used after targeted therapy stops controlling the cancer or when resistance is strongly suspected....

MET Amplification Test for Lung Cancer: Copy Number Gain, Resistance Marker, and Meaning

Learn how MET amplification testing measures lung cancer copy-number gain, how FISH and NGS results differ, why MET can cause EGFR resistance, and what positive or negative results may mean.

A MET amplification test checks whether lung cancer cells contain extra copies of the MET gene. MET encodes a receptor tyrosine kinase that can...

MET Exon 14 Skipping Test for Lung Cancer: Splice Alteration, Mutation Status, and Meaning

Learn what MET exon 14 skipping means in lung cancer, how DNA and RNA tests detect it, how positive and negative results are interpreted, and why METex14 can guide targeted NSCLC treatment.

A MET exon 14 skipping test looks for a specific oncogenic alteration in the MET gene that causes exon 14 to be removed from...

Minimal Residual Disease ctDNA Test for Lung Cancer: Recurrence Monitoring, MRD, and Tumor DNA

Learn how lung cancer MRD ctDNA testing detects molecular residual disease, what positive and negative results mean, how it can precede recurrence on scans, and why treatment decisions still require clinical context.

A minimal residual disease (MRD) ctDNA test looks for tiny amounts of lung cancer DNA that may remain in the bloodstream after treatment intended...

MSI Test for Lung Cancer: Microsatellite Instability, Mismatch Repair, and Result Meaning

Learn what MSI testing means in lung cancer, how MSI-H, MSS, dMMR, and pMMR results differ, how NGS, PCR, and IHC are used, and why this rare biomarker can matter for immunotherapy and hereditary evaluation.

An MSI test for lung cancer checks whether tumor DNA shows microsatellite instability, a pattern caused by defective DNA mismatch repair. Microsatellites are short...

Napsin A IHC Test for Lung Cancer: Adenocarcinoma Marker, Tumor Origin, and Positive Staining

Learn how Napsin A IHC supports lung adenocarcinoma diagnosis, what positive granular cytoplasmic staining means, why negative results do not exclude lung cancer, and when other tumor origins must be considered.

Napsin A immunohistochemistry (IHC) is a tissue stain used mainly to support the diagnosis of lung adenocarcinoma. Napsin A is an aspartic protease normally...

Non-Small Cell Lung Cancer Biomarker Test: Driver Mutations, PD-L1, and Molecular Profile

Non-small cell lung cancer (NSCLC) biomarker testing examines a tumor for molecular changes and protein markers that can influence treatment. In advanced NSCLC, broad...

NSE Test for Lung Cancer: Small Cell Lung Cancer Marker, High Levels, and Monitoring

Learn what an NSE blood test means in small cell lung cancer, why levels can be high, how hemolysis causes false elevations, and how serial NSE trends may support treatment and recurrence monitoring.

Neuron-specific enolase (NSE) is a blood biomarker that can be elevated in small cell lung cancer (SCLC) and other neuroendocrine conditions. The test measures...