Hematological Reference Values

HEMATOLOGICAL REFERENCE VALUES
Analyte	Reference value
Analyte	Conventional units	SI units
COAGULATION PROFILE
D-Dimer	≤ 500 ng/mL FEU	< 3nmol/L FEU
Fibrinogen	150–350 mg/dL	1.5–3.5 g/L
Partial thromboplastin time, activated (aPTT)	25–35 sec	—
Prothrombin time (PT)	11–13 sec	—
Thrombin time	18.5–24 sec	—
COMPLETE BLOOD COUNT (CBC)
Erythrocyte sedimentation rate (ESR)
Females	0–20 mm/h	0–20 mm/h
Males	0–15 mm/h	0–20 mm/h
Folic acid
RBC	160–855 ng/mL	362–1937 nmol/L
Serum	2.5–20 ng/mL	5.7–45.3 nmol/L
Hemoglobin (Hgb)
Females	12–16 g/dL	120–160 g/L
Males	14–17 g/dL	140–170 g/L
Hematocrit (Hct)
Females	36–47%	—
Males	41–51%	—
Mean Corpuscular Hemoglobin (MCH)	28–32 pg	—
Mean Corpuscular Hemoglobin Concentration (MCHC)	32–36 g/dL	320–360 g/L
Mean Corpuscular Volume (MCV)	80–100 fL	—
Platelet (Plt) count	150–350 x 10³/μL	150–350 x 10⁹/L
Red Blood Cell (RBC) count	4.2–5.9 x 10⁶ cells/μL	4.2–5.9 x 10¹² cells/L
Reticulocyte
Percentage	0.5–1.5%	—
Absolute	23–90 x 10³/μL	23–90 x 10⁹/L
Vitamin B₁₂	200–800 pg/mL	148–590 pmol/L
White Blood Cell (WBC) count	4.5–11 x 10³ cells/μL	4.5–11 x 10⁹ cells/L
Neutrophils (segs)	2.6–8.5 x 10³ cells/μL	2.6–8.5 x 10⁹ cells/L
Neutrophils (bands)	0–1.2 x 10³ cells/μL	0–1.2 x 10⁹ cells/L
Lymphocytes	0.77–4.5 x 10³ cells/μL	0.77–4.5 x 10⁹ cells/L
Monocytes	0.14–1.3 x 10³ cells/μL	0.14–1.3 x 10⁹ cells/L
Eosinophils	0–0.55 x 10³ cells/μL	0–0.55 x 10⁹ cells/L
Basophils	0–0.22 x 10³ cells/μL	0–0.22 x 10⁹cells/L
ELECTROLYTES
Calcium	9–10.5 mg/dL	2.2–2.6 mmol/L
Chloride	98–106 mEq/L	98–106 mmol/L
Magnesium	1.5–2.4 mg/dL	0.62–0.99 mmol/L
Phosphorus, inorganic	3.0–4.5 mg/dL	0.97–1.45 mmol/L
Potassium	3.5–5 mEq/L	3.5–5 mmol/L
Sodium	136–145 mEq/L	136–145 mmol/L
HEPATIC FUNCTION
Alanine aminotransferase (ALT)	< 35 U/L	< 0.58 μkat/L
Albumin	3.5–5.4 g/dL	35–54 g/L
Alkaline phosphatase (ALP)	36–150 U/L	0.5–2.5 μkat/L
Aspartate aminotransferase (AST)	< 35 U/L	< 0.58 μkat/L
Bilirubin
Direct	0–0.3 mg/dL	0–5.1 μmol/L
Total	0.3–1.2 mg/dL	5.1–20.5 μmol/L
Protein, total	6–7.8 g/dL	60–78 g/L
IRON STUDIES
Ferritin	Males: 30–300 ng/mL Females: 30–200 ng/mL	Males: 30–300 mcg/L Females: 30–200 mcg/L
Iron	Males: 50–150 mcg/dL Females: 35–145 mcg/dL	Males: 9.2–27.5 μmol/L Females: 6.4–26.5 μmol/L
Iron-binding capacity, total (TIBC)	250–460 mcg/dL	45–82 μmol/L
Transferrin	200–360 mg/dL	2.0–3.6 g/L
Transferrin saturation	20–50%	—
LIPID PANEL (DESIRABLE LEVEL)
High-density lipoprotein (HDL-C)	≥ 40 mg/dL	≥ 1.04 mmol/L
Low-density lipoprotein (LDL-C)	≤ 130 mg/dL	≤ 3.36 mmol/L
Total cholesterol (TC)	150–199 mg/dL	3.88–5.15 mmol/L
Triglycerides (fasting)	Normal: < 150 mg/dL Borderline: 150–199 mg/dL High: 200–499 mg/dL Very high: ≥500 mg/dL	Normal: < 1.69 mmol/L Borderline: 1.69–2.25 mmol/L High: 2.26–5.64 mmol/L Very high: >5.65 mmol/L
METABOLIC PANEL
Bicarbonate	23–28 mEq/L	23–28 mmol/L
Glucose
Fasting	70–105 mg/dL	3.9–5.8 mmol/L
2hr postprandial	< 140 mg/dL	< 7.8 mmol/L
Hemoglobin A1c	4.7–8.5%	—
Lactic acid, venous	6–16 mg/dL	0.67–1.8 mmol/L
pH, blood	Arterial: 7.35–7.45 Venous: 7.32–7.43	—
RENAL FUNCTION
Creatinine, serum	Men: 0.7–1.2 mg/dL Women: 0.5–1.0 mg/dL	Men: 60–110 μmol/L Women: 45–90 μmol/L
Urea nitrogen (BUN)	8–20 mg/dL	2.9–7.1 mmol/L
THYROID PANEL
Thyroid-stimulating hormone (TSH)	0.5–5.0 μIU/mL	0.5–5.0 mIU/L
Thyroxine (T4)
Free	0.9–2.4 ng/dL	12–31 pmol/L
Total	5–12 mcg/dL	64–155 nmol/L
Triiodothyronine (T3)
Uptake	25–35%	—
Total	70–195 ng/dL	1.1–3.0 nmol/L
NOTES
Key: μkat = microkatal; pkat = picokatal; ALT: formerly serum glutamic pyruvic transaminase (SGPT) AST: formerly serum glutamic oxaloacetic transaminase (SGOT); FEU = fibrinogen equivalent units
REFERENCES
Normal Laboratory Values. Merck Manual Professional Version. https://www.merckmanuals.com/professional/resources/normal-laboratory-values/normal-laboratory-values. Updated September 2022. Accessed October 11, 2023. (Rev. 10/2023)

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