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Methanol blood testing helps diagnose toxic alcohol poisoning, interpret high levels, assess vision risk, and guide urgent treatment with antidotes, bicarbonate, and dialysis.

Methanol Blood Test: Toxic Alcohol Poisoning, High Levels, Vision Risk, and Results

Learn how methemoglobin and carboxyhemoglobin tests are interpreted, what abnormal levels can mean, why pulse oximetry may mislead, and when urgent care is needed.

Methemoglobin and Carboxyhemoglobin: Interpreting Abnormal Hemoglobin Toxicity Tests

Learn what a methemoglobin blood test measures, what high levels mean, normal range, cyanosis symptoms, common toxicity causes, and when urgent treatment is needed.

Methemoglobin Blood Test: High Methemoglobin, Cyanosis, Toxicity, Normal Range, and Results

Learn what a methotrexate blood test measures, how drug levels guide high-dose methotrexate clearance, what toxic or delayed results can mean, and when follow-up care matters.

Methotrexate Blood Test: Drug Level, Toxicity, Clearance, Therapeutic Monitoring, and Results

Learn what a nickel blood test measures, what high nickel may mean, how normal ranges vary, and when exposure, allergy, toxicity, or follow-up testing matters.

Nickel Blood Test: High Nickel, Normal Range, Exposure, Toxicity, and Results

Learn what a phenobarbital blood test measures, common therapeutic and toxic levels, when seizure medication monitoring is needed, and how results are interpreted.

Phenobarbital Blood Test: Therapeutic Range, Toxic Level, Seizure Medication Monitoring, and Results

Diagnostics

Home Diagnostics Page 11

High bicarbonate or high CO2 on a blood test can signal metabolic alkalosis, vomiting, diuretics, dehydration, low potassium, aldosterone excess, or chronic CO2 retention. Learn what the result means and what follow-up tests may show.

High Bicarbonate Blood Test: Causes, Metabolic Alkalosis, CO2, and Meaning

Understand high BUN blood test results, including dehydration, kidney function, BUN/creatinine ratio, common causes, symptoms, and follow-up tests.

High Blood Urea Nitrogen (BUN) Test: Causes, Kidney Function, Dehydration, and...

Learn what a high BUN/creatinine ratio means, including common causes such as dehydration, low kidney blood flow, kidney disease, high protein intake, and GI bleeding.

High BUN/Creatinine Ratio Test: Causes, Dehydration, Kidney Disease, and Meaning

Learn what a high CO2 blood test means, including high bicarbonate, metabolic alkalosis, chronic CO2 retention, common causes, symptoms, and follow-up tests.

High Carbon Dioxide (CO2) Blood Test: Causes, Bicarbonate, Acid-Base Balance, and...

Learn what a high chloride blood test means, including common causes such as dehydration, metabolic acidosis, kidney problems, diarrhea, medications, and IV saline.

High Chloride Blood Test: Causes, Dehydration, Acidosis, and Meaning

Learn what a high creatinine blood test means, including kidney function, eGFR, common causes, warning signs, follow-up tests, and ways to protect kidney health.

High Creatinine Blood Test: Causes, Kidney Function, eGFR, and Meaning

Learn what a high ionized calcium test means, including ranges, causes, symptoms, hypercalcemia risks, kidney effects, follow-up tests, and when to seek care.

High Ionized Calcium Test: Causes, Symptoms, Hypercalcemia, and Meaning

Learn what a high PTH blood test means, including causes with high, normal, or low calcium, kidney disease links, follow-up tests, symptoms, and treatment options.

High Parathyroid Hormone (PTH) Blood Test: Causes, Calcium, Kidney Disease, and...

High potassium blood test explained: causes of hyperkalemia, symptoms, heart rhythm risks, kidney disease links, severity ranges, treatment options, and next steps.

High Potassium Blood Test: Causes, Symptoms, Heart Rhythm, and Kidney Risk

High renin blood test meaning, causes, aldosterone patterns, blood pressure links, kidney hormone signals, preparation tips, and follow-up testing explained clearly.

High Renin Blood Test: Causes, Blood Pressure, Kidney Hormones, and Meaning

Understand high serum osmolality, including normal ranges, dehydration, high sodium, diabetes-related hyperosmolar states, osmolal gap causes, urgent symptoms, and follow-up testing.

High Serum Osmolality Test: Causes, Dehydration, Sodium Balance, and Meaning

High sodium blood test results may mean hypernatremia, often from dehydration, water loss, diabetes insipidus, kidney problems, or sodium overload. Learn symptoms, causes, ranges, and when urgent care is needed.

High Sodium Blood Test: Causes, Symptoms, Hypernatremia, and Meaning

Learn what a high urea blood test means, including BUN conversion, kidney function, dehydration, BUN/creatinine ratio, common causes, symptoms, and follow-up tests.

High Urea Blood Test: Causes, Kidney Function, Dehydration, and Meaning

Learn what a high uric acid blood test means, including common causes, gout risk, kidney stone links, follow-up tests, treatment targets, and when urgent care matters.

High Uric Acid Blood Test: Causes, Gout, Kidney Stones, and Meaning

Learn the ionized calcium normal range, what low and high results mean, why pH and albumin matter, and which follow-up tests help explain abnormal calcium levels.

Ionized Calcium Test Normal Range: Reference Values and Meaning

Learn what a kidney function blood test panel measures, including eGFR, creatinine, BUN, sodium, potassium, chloride, bicarbonate, common ranges, abnormal results, follow-up tests, and urgent warning signs.

Kidney Function Blood Test Panel: eGFR, Creatinine, BUN, Electrolytes, and Results

A kidney function panel focuses on kidney markers, electrolytes, phosphorus, and albumin, while a CMP adds liver enzymes, bilirubin, total protein, glucose, and broader metabolic screening.

Kidney Function Panel vs CMP: What Is the Difference?

Learn what the KIM-1 test measures, why kidney injury molecule-1 rises with tubular kidney damage, how results are interpreted, and when follow-up matters.

Kidney Injury Molecule-1 (KIM-1) Test: Kidney Damage Marker, Acute Kidney Injury,...

Learn what a low aldosterone blood test means, including links to low blood pressure, high potassium, low sodium, adrenal insufficiency, kidney disease, medications, renin, and follow-up testing.

Low Aldosterone Blood Test: Causes, Low Blood Pressure, Potassium, and Meaning

Learn what a low anion gap blood test means, including common causes such as low albumin, lab error, lithium, chloride interference, and abnormal proteins.

Low Anion Gap Blood Test: Causes, Albumin, Lab Error, and Meaning

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