To help you navigate the diagnostic, chemical, and statistical explanations throughout the HimZen articles, we have compiled a glossary defining the essential terms of preventive health and lab biomarker science.
ALT (Alanine Aminotransferase)
An enzyme concentrated primarily in liver cells. Elevated blood ALT levels indicate hepatocellular damage, commonly associated with fatty liver accumulation, toxin exposure, or alcohol stress.
ApoB (Apolipoprotein B)
The structural organizing protein located on the surface of all atherogenic (plaque-forming) lipoproteins, including VLDL, IDL, and LDL. Measuring ApoB provides an exact count of circulating plaque-forming particles.
AST (Aspartate Aminotransferase)
An enzyme present in both liver cells and skeletal muscle tissue. Like ALT, elevated blood AST can indicate liver damage, but can also be temporarily triggered by muscle micro-damage from strenuous exercise.
Biotin Interference
A diagnostic phenomenon where supplemental biotin (Vitamin B7) disrupts the streptavidin-biotin assays used in laboratories, leading to false results in thyroid panels and cardiovascular markers.
Creatinine
A chemical waste product generated by normal muscle breakdown and filtered out of the blood by the kidneys, used as a primary marker to evaluate kidney function.
eGFR (Estimated Glomerular Filtration Rate)
A mathematical calculation that estimates the volume of blood filtered by the kidneys per minute based on serum creatinine levels, age, and biological sex, used to monitor for kidney decline.
Fasting Insulin
The concentration of insulin circulating in the blood after an 8 to 12-hour fast, recognized as a sensitive, early marker of cellular insulin resistance.
Free Hormones
The active, unbound fraction of hormones (such as free testosterone or free T3) circulating in the bloodstream, capable of entering target cells to bind to receptors.
Glycation
A non-enzymatic chemical reaction where glucose molecules bind permanently to proteins (such as hemoglobin), altering their structure and function.
HbA1c (Glycated Hemoglobin)
A blood biomarker measuring the percentage of red blood cells with glucose permanently attached, providing a stable, 3-month average of blood sugar levels.
HOMA-IR
An acronym standing for Homeostatic Model Assessment for Insulin Resistance-a mathematical formula that calculates cellular insulin resistance based on fasting glucose and fasting insulin levels.
hs-CRP (High-Sensitivity C-Reactive Protein)
An acute-phase reactant protein synthesized by the liver that measures low-grade, chronic systemic and vascular inflammation, used to evaluate cardiovascular risk.
Lipoproteins
Spherical transport bubbles made of lipids and proteins required to carry hydrophobic (water-fearing) cholesterol and triglycerides through the aqueous bloodstream.
Optimal Value
The target range for a biomarker associated with high metabolic function, cellular energy, and long-term disease prevention, distinct from standard reference ranges.
PSA (Prostate-Specific Antigen)
A glycoprotein synthesized by prostate cells. Elevated serum PSA is a diagnostic marker used to monitor prostate size, inflammation, or growth.
Reference Range
The statistical interval containing the middle 95% of a laboratory's tested population, used to define clinical normalcy.
TSH (Thyroid-Stimulating Hormone)
A pituitary hormone that signals the thyroid gland to synthesize and release thyroid hormones, acting as the primary brain-to-thyroid messenger.
Triglycerides
The chemical form of fat your body uses for energy storage, carried through the blood inside lipoproteins. Elevated triglycerides are a sensitive marker of dietary carbohydrate excess.
Visceral Fat
The metabolically active, highly inflammatory fat tissue stored deep inside the abdominal cavity around vital organs, highly correlated with insulin resistance and cardiovascular risk.
Waist-to-Height Ratio (WHtR)
A physical screening metric calculated by dividing waist circumference by height, used as a reliable indicator of visceral fat accumulation.
Disclaimer: This glossary is for educational purposes only. Definitions are simplified to support general understanding of clinical diagnostics, metabolic science, and laboratory statistics. Always consult medical professionals for clinical evaluations.
⚠️ Educational Disclaimer
This content is for educational purposes only. Natural compounds can interact with medications and underlying conditions. Consult a healthcare professional before making changes to your wellness routine.
HimZen Editorial
The HimZen editorial team compiles and synthesizes publicly available wellness research. We analyze data and outline key pros and cons to help you compare options and make better wellness decisions.