Lab Test Guides

Plain-English explanations of 87+ common lab tests — normal ranges and what high or low results mean. Pick a test, or analyze your whole report.

Adrenal Hormones

Cortisol (Morning)

Bone & Minerals

Cardiac

CRPInflammation marker ESRInflammation Vitamin DBone & immune health Vitamin B12Nerve & blood cell health Procalcitonin

Cardiac Markers

Troponin I CK (Total)CK-MB BNP NT-proBNP Homocysteine

Coagulation

PT INR aPTT D-Dimer Fibrinogen

Complete Blood Count (CBC)

HemoglobinOxygen-carrying protein HematocritRed cell percentage RBC MCVCell size MCHHb per cell MCHC WBCImmune defense NeutrophilsBacterial fighters LymphocytesViral fighters MonocytesImmune cleanup cells EosinophilsAllergy & parasite response PlateletsBlood clotting RDWCell size variation

Diabetes & Blood Sugar

Fasting GlucoseDiabetes marker Random Glucose HbA1c3-month blood sugar average Fasting Insulin

Electrolytes

SodiumFluid & nerve balance PotassiumHeart & muscle function CalciumBone & muscle function MagnesiumMuscle & enzyme function ChlorideFluid balance BicarbonateAcid-base balance

Female Hormones

FSH LH Estradiol (E2)Progesterone Prolactin AMH Beta-hCG

Iron Studies

Serum IronCirculating iron FerritinIron storage protein TIBC

Kidney Function

CreatinineKidney filtration marker BUNKidney waste marker UreaKidney waste product eGFR Uric AcidGout marker Cystatin C Microalbumin (Urine)

Lipid / Cholesterol

Total CholesterolBlood fat HDL"Good" cholesterol LDL"Bad" cholesterol TriglyceridesBlood fat storage VLDLVery low density lipoprotein Lipoprotein(a)

Liver Function

ALTLiver enzyme ASTLiver/heart enzyme ALPLiver/bone enzyme Total BilirubinBile pigment Direct BilirubinConjugated bile pigment AlbuminMain blood protein Total ProteinBlood protein level GGT LDH Globulin

Male Hormones

Total Testosterone Free Testosterone DHEA-S

Other Tests

Thyroid

TSH T3Active thyroid hormone T4Thyroid hormone Free T3 Free T4 Anti-TPO

Vitamins & Nutrition