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

ALK Fusion Test for Lung Cancer: Gene Fusion, 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.

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

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

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.

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

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.

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

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

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

Diagnostics

Home Diagnostics Page 61

Learn what a high AST blood test means, including liver damage, fatty liver, alcohol, medications, muscle injury, rhabdomyolysis, follow-up tests, and urgent warning signs.

High Aspartate Aminotransferase (AST) Test: Causes, Liver Damage, Muscle Injury, and...

High ferritin with liver enzymes can signal inflammation, fatty liver disease, alcohol-related liver stress, or iron overload. Learn how transferrin saturation, ALT, AST, GGT, bilirubin, and follow-up testing help clarify the cause.

High Ferritin and Liver Enzymes: Interpreting Inflammation, Fatty Liver, and Iron...

High globulin blood test results can signal inflammation, infection, liver disease, autoimmune disease, dehydration, or monoclonal gammopathy. Learn causes and follow-up tests.

High Globulin Blood Test: Causes, Inflammation, Infection, Liver Disease, and Meaning

High total protein blood test results can come from dehydration, inflammation, infection, liver disease, or high globulin patterns. Learn what albumin, globulin, and the A/G ratio mean and when follow-up testing matters.

High Total Protein Blood Test: Causes, Dehydration, Inflammation, and Meaning

Learn what a high trypsinogen blood test can mean, including pancreatitis, pancreatic duct problems, chronic pancreas disease, cystic fibrosis screening, symptoms that need urgent care, and follow-up tests.

High Trypsinogen Blood Test: Causes, Pancreatitis, Pancreas Disease, and Meaning

Learn what the hyaluronic acid blood test measures, why high levels may suggest liver fibrosis, how normal ranges vary, and how results are interpreted with liver panels, ELF, FIB-4, and elastography.

Hyaluronic Acid Blood Test: High Levels, Liver Fibrosis Marker, Normal Range,...

Understand the indirect bilirubin blood test, normal range, high indirect bilirubin causes, hemolysis patterns, Gilbert syndrome, jaundice clues, and follow-up labs.

Indirect Bilirubin Blood Test: High Indirect Bilirubin, Normal Range, Hemolysis, and...

Learn what the LDH isoenzymes test measures, how LDH-1 through LDH-5 patterns relate to liver, muscle, heart, lung, pancreas, kidney, and blood cell damage, and how results are interpreted with other blood tests.

LDH Isoenzymes Test: Liver, Heart, Muscle, Blood Cell Damage, and Results

Learn how to interpret lipase and amylase blood tests, including high and low results, pancreatitis patterns, mild elevations, non-pancreas causes, and when urgent care is needed.

Lipase and Amylase: Interpreting Pancreas Blood Tests

Learn what a lipase blood test measures, what high or low lipase can mean, how results relate to pancreatitis, normal ranges, urgent symptoms, and follow-up testing.

Lipase Blood Test: High Lipase, Normal Range, Pancreatitis, Pancreas Disease, and...

Understand liver function tests, including ALT, AST, ALP, GGT, bilirubin, and albumin, with clear explanations of normal ranges, abnormal patterns, common causes, follow-up testing, and urgent warning signs.

Liver Function Tests (LFTs) Panel: ALT, AST, ALP, GGT, Bilirubin, Albumin,...

Learn what a low ALT blood test can mean, including vitamin B6 deficiency, low muscle mass, aging, nutrition issues, liver health patterns, and when follow-up is needed.

Low Alanine Aminotransferase (ALT) Test: Causes, Vitamin B6, Liver Health, and...

Low albumin blood test results can point to liver disease, kidney protein loss, inflammation, malnutrition, gut protein loss, or fluid overload. Learn what the pattern means and which follow-up tests matter.

Low Albumin Blood Test: Causes, Liver Disease, Kidney Loss, Malnutrition, and...

Learn what a low albumin/globulin ratio means, including common causes such as liver disease, inflammation, kidney protein loss, infection, autoimmune disease, malnutrition, and high globulin.

Low Albumin/Globulin (A/G) Ratio Test: Causes, Liver Disease, Inflammation, and Meaning

Low alkaline phosphatase can point to zinc deficiency, malnutrition, thyroid disease, anemia, Wilson disease, or rare hypophosphatasia. Learn what low ALP means, which follow-up tests help, and when medical care matters.

Low Alkaline Phosphatase (ALP) Test: Causes, Zinc Deficiency, Malnutrition, and Meaning

Low ALP can reflect zinc deficiency, malnutrition, hypothyroidism, anemia, lab interference, or hypophosphatasia. Learn how to interpret low alkaline phosphatase patterns with zinc and related blood tests.

Low ALP and Zinc: Interpreting Low Alkaline Phosphatase Patterns

Low amylase may suggest chronic pancreas damage, exocrine pancreatic insufficiency, cystic fibrosis, metabolic patterns, or lab variation. Learn causes, symptoms, follow-up tests, and when to seek care.

Low Amylase Blood Test: Causes, Pancreas Function, and Meaning

Low AST is usually less concerning than high AST, but it can sometimes relate to vitamin B6 status, low muscle mass, malnutrition, chronic illness, or lab variation. Learn how to interpret low AST with ALT, liver panel results, symptoms, and follow-up testing.

Low Aspartate Aminotransferase (AST) Test: Causes, Vitamin B6, Liver Health, and...

Low globulin on a blood test can reflect low antibodies, protein loss, liver disease, kidney disease, malnutrition, or lab variation. Learn what patterns and follow-up tests help clarify the cause.

Low Globulin Blood Test: Causes, Immune Deficiency, Protein Loss, and Meaning

Low total protein on a blood test can mean low albumin, low globulin, malnutrition, liver disease, kidney protein loss, gut protein loss, inflammation, or fluid dilution.

Low Total Protein Blood Test: Causes, Malnutrition, Liver Disease, Kidney Loss,...

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