Evidence-Based Supplement & Herb Guides

Small Dense LDL (sdLDL) Test: High sdLDL, Normal Range, Pattern B, and Cardiovascular Risk

Understand the small dense LDL test, including high sdLDL, normal range, Pattern B, LDL particle size, cardiovascular risk, causes, preparation, and ways to improve results.

Small dense LDL, often shortened to sdLDL, is a subtype of LDL particle that tends to appear when triglycerides are high, HDL cholesterol is...

Small Dense LDL and Triglycerides: Pattern B, Insulin Resistance, and Risk

Understand small dense LDL, Pattern B, triglycerides, insulin resistance, ApoB, and cardiovascular risk with practical guidance on test interpretation and follow-up.

Small dense LDL is a type of LDL particle that tends to appear when triglycerides are high, HDL cholesterol is low, and insulin resistance...

Total Cholesterol and HDL Ratio: Interpreting Cholesterol Risk Without Overdoing It

Learn what the total cholesterol and HDL ratio means, how to calculate it, what high and low ratios suggest, and why LDL, non-HDL cholesterol, triglycerides, ApoB, and overall heart risk still matter.

Total cholesterol and HDL ratio is a simple number that compares all cholesterol in the blood with HDL cholesterol, the type often called “good”...

Total Cholesterol Test Normal and Optimal Range: Reference Values and Targets

Learn the normal, borderline, high, and optimal total cholesterol ranges, how to interpret your result, why LDL and non-HDL targets matter, and what to do next.

Total cholesterol is one of the first numbers many people notice on a lipid panel, but it is only the starting point for understanding...

Total Cholesterol/HDL Ratio Test: Normal Range, High Ratio, Cholesterol Risk, and Heart Health

Learn what the total cholesterol/HDL ratio means, how to calculate it, what normal and high results suggest, and how it fits with LDL, HDL, non-HDL cholesterol, and heart risk.

The total cholesterol/HDL ratio test compares all cholesterol in the blood with HDL cholesterol, the lipoprotein often linked with cholesterol removal from arteries. The...

Triglyceride/HDL Ratio Test: Insulin Resistance, Diabetes Risk, Heart Risk, and Results

Learn what the triglyceride/HDL ratio means, how to calculate it, what high results suggest about insulin resistance, diabetes risk, heart risk, and follow-up testing.

The triglyceride/HDL ratio is a simple calculation from a standard lipid panel that can reveal more about metabolic health than either number alone. It...

Triglycerides and HDL: Interpreting the Metabolic Risk Pattern

High triglycerides with low HDL can signal insulin resistance, metabolic syndrome, fatty liver, and higher cardiovascular risk. Learn how to interpret triglycerides, HDL, and the TG/HDL ratio.

Triglycerides and HDL cholesterol often move in opposite directions when the body is struggling with insulin resistance, excess visceral fat, high refined-carbohydrate intake, fatty...

Triglycerides Blood Test Normal and Optimal Range: Reference Values and Targets

Learn the normal and optimal triglyceride blood test ranges, what high or low results mean, when fasting matters, and which targets help guide heart, metabolic, and pancreatitis risk.

Triglycerides are the main storage form of fat in the body and a routine part of most lipid panels. The blood test shows how...

VLDL Cholesterol Test Normal Range: Reference Values and Meaning

Learn the normal VLDL cholesterol range, how VLDL is calculated from triglycerides, what high or low results mean, and when follow-up testing matters.

VLDL cholesterol is the cholesterol carried inside very low-density lipoproteins, the particles your liver uses to move triglycerides through the bloodstream. A VLDL cholesterol...

Aldosterone Blood Test Normal Range: Reference Values and Meaning

Learn the aldosterone blood test normal range, why upright and supine values differ, and what high or low aldosterone may mean with renin, potassium, sodium, blood pressure, and kidney function.

Aldosterone is a hormone that helps control blood pressure, blood volume, sodium, and potassium. It is made by the adrenal glands, which sit above...

Anion Gap Blood Test Normal Range: Reference Values and Meaning

Learn the normal anion gap blood test range, how it is calculated, what high and low results mean, and when abnormal values may need urgent follow-up.

The anion gap is a calculated value that helps show whether the blood has an unusual buildup of acids. It is usually reported with...

Beta-2 Microglobulin Blood Test: High Levels, Kidney Function, Blood Cancer Marker, and Results

Learn what a beta-2 microglobulin blood test means, including high B2M causes, kidney function links, urine B2M, blood cancer monitoring, normal ranges, and follow-up steps.

Beta-2 microglobulin is a small protein found on the surface of most cells in the body. A blood test for beta-2 microglobulin, often shortened...

Bicarbonate and Anion Gap: Interpreting Acid-Base Blood Tests

Learn how bicarbonate and anion gap blood tests help interpret metabolic acidosis, high anion gap patterns, kidney disease, ketoacidosis, and urgent acid-base results.

Bicarbonate and anion gap results help show whether the body is keeping acid and base in balance. These numbers usually appear on a metabolic...

Bicarbonate Blood Test Normal Range: Reference Values and Meaning

Learn the normal bicarbonate blood test range, what low or high CO2/HCO3 results mean, and how kidneys, lungs, electrolytes, and the anion gap affect interpretation.

A bicarbonate blood test helps show how well your body is keeping acids and bases in balance. On most routine lab reports, bicarbonate appears...

Blood Urea Nitrogen (BUN) Test Normal Range: Reference Values and Meaning

Learn the normal BUN test range, what high and low blood urea nitrogen results can mean, and how BUN compares with creatinine, eGFR, hydration, diet, and kidney function.

Blood urea nitrogen, often shortened to BUN, is a blood test that helps show how much urea nitrogen is circulating in your bloodstream. Urea...

BUN and Creatinine: Interpreting the Kidney Panel Without Overdoing It

Learn how to interpret BUN, creatinine, eGFR, and the BUN/creatinine ratio without overreacting, including dehydration patterns, kidney disease clues, repeat testing, and when follow-up matters.

BUN and creatinine are two common blood markers that help show how your kidneys are handling waste. They often appear together on a basic...

BUN/Creatinine Ratio: Dehydration vs Kidney Disease Pattern

Understand the BUN/creatinine ratio, including high ratio dehydration patterns, kidney disease patterns, normal ranges, causes, follow-up testing, and when abnormal results need urgent care.

The BUN/creatinine ratio compares two waste markers that often appear together on a kidney or metabolic blood panel. BUN, or blood urea nitrogen, rises...

BUN/Creatinine Ratio Normal Range: Reference Values and Meaning

Learn the normal BUN/creatinine ratio range, what high and low ratios mean, common causes, and how to read results with BUN, creatinine, and eGFR.

The BUN/creatinine ratio is a calculated blood test result that compares blood urea nitrogen, a waste product from protein breakdown, with creatinine, a waste...

Calcium, Phosphorus, and PTH: Interpreting Kidney-Mineral Balance

Learn how calcium, phosphorus, and PTH work together in kidney-mineral balance, including common lab patterns, CKD-related changes, follow-up tests, and when abnormal results need prompt care.

Calcium, phosphorus, and parathyroid hormone (PTH) are best interpreted together because they work as a linked system. Calcium supports nerves, muscles, heart rhythm, blood...

Carbon Dioxide (CO2) Blood Test Normal Range: Reference Values and Meaning

Learn the normal CO2 blood test range, what high or low carbon dioxide means, how bicarbonate relates to kidney and lung function, and when follow-up matters.

A carbon dioxide blood test checks how much total CO2 is in the liquid part of your blood. In everyday lab reports, this result...