| LAB | REFERENCE RANGE |
| Activated partial thromboplastin time (APTT) | 25–35 seconds25–35 seconds |
| Adrenocorticotropic hormone (ACTH) | 9–52 pg/mL2–11 pmol/L |
| Alanine aminotransferase (ALT) | 0–35 U/L0–0.58 µkat/L |
| Albumin | 3.5–5.5 g/dL35–55 g/L |
| Alkaline phosphatase | 45–115 U/L (men), 30–100 U/L (women)0.75–1.92 µkat/L (men), 0.50–1.67 µkat/L (women) |
| Ammonia | 40–80 µg/dL23–47 µmol/L |
| Amylase | 0–130 U/L |
| Anion Gap | 8–16 mEq/L8–16 mmol/L |
| Aspartate aminotransferase (AST) | 0–35 units/L0–0.58 µkat/L |
| Bands | < 1 x 10,000/µL< 1 x 10,000/mm3 |
| Bicarbonate | 23–28 mEq/L23–28 mmol/L |
| Bilirubin, direct/conjugate | 0–0.3 mg/dL0–5.1 µmol/L |
| Bilirubin, total | 0.3–1.2 mg/dL5.1–20.5 µmol/L |
| Blood urea nitrogen (BUN) | 8–20 mg/dL2.9–7.1 mmol/L |
| B-type natriuretic peptide (BNP) | <100 pg/mL< 100 ng/L |
| Calcium (ionized, adult) | 4.5–5.6 mg/dL1.05–1.3 mmol/L |
| Calcium (total) | 9–10.5 mg/dL2–2.6 mmol/L |
| Ceruloplasmin | 16–31 mg/dL (men), 19–39 mg/dL (women) |
| Chloride | 98–106 mEq/L98–106 mmol/L |
| Cholesterol (Total: Adult) | 150–199 mg/dL3.88–5.15 mmol/L |
| COHb (%) | < 2% Smoker: <9%Non Smoker: < 2% Smoker: <9% |
| Copper | 63.7–140.12 µg/dL12–22 µmol/L |
| Cortisol (bedtime) | 3–13 µg/dL83–359 nmol/L |
| Cortisol (free, urine) | < 50 µg/24 h138 nmol/24 h |
| Cortisol (morning) | 10–20 µg/dL275.88–551.76 nmol/L |
| C-peptide – serum | 0.5–2.0 ng/mL0.17–0.66 nmol/L |
| Creatine kinase (CK) | 30–170 U/L0.50–2.84 µkat/L |
| Creatinekinase – MB fraction | (CK-MB)0–7 ng/mL0–7 µg/L |
| Creatinine | 0.7–1.3 mg/dL61.9–115 µmol/L |
| CSF Cell count | 0-5 cells/µL0-5 × 10⁶ cells/L |
| CSF Glucose | 40–80 mg/dL2.2–4.4 mmol/L |
| CSF Opening pressure | 70–200 mm H₂O |
| CSF Protein | 15–60 mg/dL150–600 mg/L |
| D-dimer | < 0.5 µg/mL< 500 ng/mL |
| Erythrocyte sedimentation rate (ESR) | 0–15 mm/hr (men) 0–20 mm/hr (women) |
| Estradiol (female, day 1-10) | 14–27 pg/mL50–100 pmol/L |
| Estradiol (female, day 11-20) | 14–54 pg/mL50–200 pmol/L |
| Estradiol (female, day 21-30) | 19–41 pg/mL70–150 pmol/L |
| Estradiol (male) | 10–30 pg/mL37–110 pmol/L |
| Ferritin, serum | 15–200 ng/mL15–200 µg/L |
| Fibrinogen, plasma | 150–350 mg/dL1.5–3.5 g/L |
| Follicle-stimulating hormone (female, follicular/luteal phase) | 5–20 mU/mL5–20 U/L |
| Follicle stimulating hormone (female, midcycle) | 30–50 mU/mL30–50 U/L |
| Follicle stimulating hormone (female, postmenopausal) | > 35 mU/mL> 35 U/L |
| Follicle stimulating hormone (male) | 5–15 mU/mL5–15 U/L |
| Free Thyroxine (T4), serum | 0.9–2.4 ng/dL12–31 pmol/L |
| Free Triiodothyronine (T3), serum | 3.6–5.6 ng/L0.06–0.09 nmol/L |
| Gastrin | 180 pg/mL0–86.58 pmol/L |
| Glucose (fasting) | 70–100 mg/dL3.9–5.6 mmol/L |
| Glycosylated hemoglobin | 4%–5.9%4%–5.9% |
| Haptoglobin | 50–150 mg/dL500–1500 mg/L |
| HDL (Men) | ≥ 40 mg/dL1.0 mmol/dL |
| HDL (Women) | ≥ 50 mg/dL1.3 mmol/dL |
| Hematocrit (Hct) (Female) | 36–47%0.36–0.47 |
| Hematocrit (Hct) (Male) | 41–51%0.41–0.51 |
| Hemoglobin (Hgb) (Female) | 12–16 g/dL120–160 g/L |
| Hemoglobin (Hgb) (Male) | 14–17 g/dL140–170 g/L |
| Insulin – serum | < 25 mU/L< 174 pmol/L |
| Iron | 60–160 µg/dL11–29 µmol/L |
| Lactate dehydrogenase (LDH) | 100–1200 units/L1.00–1.67 µkat/L |
| Lactic acid | 6–16 mg/dL0.67–1.8 mmol/L |
| LDL | < 100 mg/dL |
| Lipase | < 95 U/L< 1.59 µkat/L |
| Luteinizing hormone (female, follicular/luteal phase) | 5–22 mU/mL5–22 units/L |
| Luteinizing hormone (female, midcycle) | 30–250 mU/mL30–250 units/L |
| Luteinizing hormone (female, postmenopausal) | > 30 mU/mL> 30 units/L |
| Luteinizing hormone (male) | 3–15 mU/mL3–15 units/L |
| Lymphocytes | 1,000–4,000/µL (20–40%)1,000–4,000/mm3 (20–40%) |
| Magnesium | 1.5–2.4 mg/dL0.62–0.99 mmol/L |
| Mean corpuscular hemoglobin concentration (MCHC) | 32–36 g/dL320–360 g/L |
| Mean corpuscular hemoglobin (MCH) | 28–32 pg0.4–0.5 fmol/cell |
| Mean corpuscular volume (MCV) | 80–100 fL/red cell |
| Metanephrines (urine) | < 1.2 mg/24 hours< 6.1 mmol/24 hours |
| Monocytes | 100–700/µL (2–8%)100–700/mm3 (2–8%) |
| Neutrophils | 2500–8000/µL (55–70%)2500–8000/mm3 (55–70%) |
| Parathyroid hormone (PTH) | 10–65 pg/mL10–65 ng/L |
| PCO₂ | 35–45 mm Hg4.7–6 kPa |
| pH | 7.38–7.447.38–7.44 |
| Phosphorus | 3–4.5 mg/dL0.97–1.45 mmol/L |
| Platelets | 150,000–350,000/µL150–350 × 10⁹/L |
| PO₂ | 80–100 mm Hg10.6–13.3 kPa |
| Potassium | 3.5–5.0 mEq/L3.5–5.0 mmol/L |
| Procalcitonin (adults and children > 72 hours old) | < 0.15 ng/mL |
| Prolactin (Men) | < 15 ng/mL< 15 µg/L |
| Prolactin (Nonpregnant women) | < 20 ng/mL< 20 µg/L |
| Prolactin (Pregnant women) | 36–372 ng/mL36–372 µg/L |
| Prothrombin time (PT) | 11–13 seconds |
| Pyruvate | 300–900 µg/dL34068.00–102204.00 µmol/L |
| Red blood cells (RBC) | 4.7–6.1 x 10⁶/µL (men), 4.2–5.4 x 10⁶/µL (women) |
| Red cell distribution width (RDW) | 11.6–14.6%11.6–14.6% |
| Reticulocytes | 11.6–14.6%11.6–14.6% |
| Reverse Triiodothyronine (T3) | serum10–24 ng/dL10–24 ng/dL |
| Sodium | 136–145 mEq/L136–145 mmol/L |
| Testosterone (adult male) | 300–1200 ng/dL10–42 nmol/L |
| Testosterone (female) | 20–75 ng/dL0.7–2.6 nmol/L |
| Thyroid-stimulating hormone (TSH) | 0.5–5.0 µU/mL0.5–5.0 mU/L |
| Total iron-binding capacity (TIBC) | 250–460 µg/dL45–82 µmol/L |
| Total Serum Protein | 6.0–7.8 g/dL60–78 g/L |
| Total Thyroxine (T4) | serum5–12 µg/dL64–155 nmol/L |
| Total Triiodothyronine (T3) | serum70–195 ng/dL1.1–3.0 nmol/L |
| Transferrin | 200–360 mg/dL24.60–44.28 µmol/L |
| Transferrin saturation | 20–50% |
| Triglycerides | <150 mg/dL< 1.7 mmol/L |
| Troponin I0 | 0.5 ng/mL0–0.5 μg/L |
| Troponin T0 | 0.10 ng/mL0–0.10 µg/L |
| Tryptase | < 11.5 ng/mL< 11.5 ng/mL |
| Urea | 17–43 mg/dL2.8–7.2 mmol/L |
| Uric acid, serum | 2.5–8 mg/dL0.15–0.47 mmol/L |
| White blood cells (WBCs) | 4000–10,000/µL4.0–10.0 x 10⁹/L |
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