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Health Knowledge Base
Lab Test
Encyclopedia
Understand what your results mean. Explore reference ranges and clinical significance.
Acid-Base
Anion Gap
Male
8–16 (lab-dependent)
mmol/L
Female
8–16 (lab-dependent)
mmol/L
Bicarbonate (HCO₃⁻)
Male
22–29
mmol/L
Female
22–29
mmol/L
Cell/Tissue Injury
LDH (Lactate Dehydrogenase)
Male
140–280
U/L
Female
135–215
U/L
Diabetes Diagnosis
Oral Glucose Tolerance Test (OGTT)
Male
Fasting <100; 2-hr <140
mg/dL
Female
Fasting <100; 2-hr <140
mg/dL
Diabetes Monitoring
Fructosamine
Male
205–285
µmol/L
Female
205–285
µmol/L
Electrolytes
Calcium (Total)
Male
8.5–10.5
mg/dL
Female
8.5–10.5
mg/dL
Chloride
Male
98–107
mmol/L
Female
98–107
mmol/L
Magnesium
Male
1.7–2.2
mg/dL
Female
1.7–2.2
mg/dL
Phosphorus
Male
2.5–4.5
mg/dL
Female
2.5–4.5
mg/dL
Potassium
Male
3.5–5.0
mmol/L
Female
3.5–5.0
mmol/L
Sodium
Male
136–145
mmol/L
Female
136–145
mmol/L
Endocrine
C-Peptide
Male
0.8–3.1 (fasting)
ng/mL
Female
0.8–3.1 (fasting)
ng/mL
Fasting Insulin
Male
2–20
µIU/mL
Female
2–20
µIU/mL
Fluid Balance
Serum Osmolality
Male
275–295
mOsm/kg
Female
275–295
mOsm/kg
Hormones
PTH (Parathyroid Hormone)
Male
15–65
pg/mL
Female
15–65
pg/mL
Thyroid Panel (TSH, FT4, FT3, TPOAb, TgAb)
Male
TSH 0.5-4.0 (optimal 1-2); FT4/FT3 per lab
varies
Female
TSH 0.5-4.0 (optimal 1-2); FT4/FT3 per lab
varies
Inflammation
CRP (C-Reactive Protein)
Male
<3
mg/L
Female
<3
mg/L
Homocysteine
Male
<15 (optimal 6-8)
µmol/L
Female
<15 (optimal 6-8)
µmol/L
High-Sensitivity C-Reactive Protein (hs-CRP)
Male
<1.0 (optimal <0.5)
mg/L
Female
<1.0 (optimal <0.5)
mg/L
Kidney Function
BUN (Blood Urea Nitrogen)
Male
8–24
mg/dL
Female
6–21
mg/dL
Creatinine
Male
0.74–1.35
mg/dL
Female
0.59–1.04
mg/dL
eGFR (Estimated Glomerular Filtration Rate)
Male
≥90 (normal)
mL/min/1.73m²
Female
≥90 (normal)
mL/min/1.73m²
Uric Acid
Male
3.7–8.6
mg/dL
Female
2.6–6.0
mg/dL
Lipid Panel
HDL Cholesterol
Male
>40
mg/dL
Female
>50
mg/dL
LDL Cholesterol
Male
<100
mg/dL
Female
<100
mg/dL
Total Cholesterol
Male
<200
mg/dL
Female
<200
mg/dL
Triglycerides
Male
<150
mg/dL
Female
<150
mg/dL
Lipids
Apolipoprotein B (ApoB)
Male
<90 (optimal)
mg/dL
Female
<90 (optimal)
mg/dL
Non-HDL Cholesterol
Male
<130 (general target)
mg/dL
Female
<130 (general target)
mg/dL
Liver
Gamma-Glutamyl Transferase (GGT)
Male
<60 (optimal <20)
U/L
Female
<45 (optimal <20)
U/L
Liver Function
Albumin
Male
3.5–5.5
g/dL
Female
3.5–5.5
g/dL
ALP (Alkaline Phosphatase)
Male
40–129
U/L
Female
35–104
U/L
ALT (Alanine Aminotransferase)
Male
9–50
U/L
Female
7–35
U/L
AST (Aspartate Aminotransferase)
Male
10–40
U/L
Female
9–32
U/L
Direct (Conjugated) Bilirubin
Male
0.0–0.3
mg/dL
Female
0.0–0.3
mg/dL
Total Bilirubin
Male
0.3–1.2
mg/dL
Female
0.3–1.2
mg/dL
Bilirubin (Direct & Indirect)
Male
Total: 0.3–1.2 (Direct: 0.0–0.3)
mg/dL
Female
Total: 0.3–1.2 (Direct: 0.0–0.3)
mg/dL
Metabolic
Fasting Insulin
Male
2 - 10 (optimal 2-5)
µIU/mL
Female
2 - 10 (optimal 2-5)
µIU/mL
HOMA-IR (Insulin Resistance Score)
Male
<1.0 optimal
calculated
Female
<1.0 optimal
calculated
Metabolic Panel
Glucose (Fasting)
Male
70–100
mg/dL
Female
70–100
mg/dL
HbA1c (Hemoglobin A1c)
Male
<5.7
%
Female
<5.7
%
Mineral Balance
Ionized Calcium
Male
1.12–1.32
mmol/L
Female
1.12–1.32
mmol/L
Muscle & Cardiac Injury
CK (Creatine Kinase)
Male
52–336
U/L
Female
38–176
U/L
Protein Status
Prealbumin (Transthyretin)
Male
18–45
mg/dL
Female
18–45
mg/dL
Total Protein
Male
6.0–8.3
g/dL
Female
6.0–8.3
g/dL
Vitamin Levels
Vitamin D (25-OH)
Male
30–100 (sufficient)
ng/mL
Female
30–100 (sufficient)
ng/mL