Lab Values — Normal Ranges
Quick-reference material for licensed nurses and students. Values are drawn from commonly cited clinical guidelines and nursing references — always verify against your facility protocols. About our editorial standards · Report a correction
Complete Blood Count (CBC)
| Test |
Normal Range |
Units |
| WBC |
4.5–11.0 |
×10⁹/L |
| RBC (M) |
4.7–6.1 |
×10¹²/L |
| RBC (F) |
4.2–5.4 |
×10¹²/L |
| Hemoglobin (M) |
14–18 |
g/dL |
| Hemoglobin (F) |
12–16 |
g/dL |
| Hematocrit (M) |
42–52 |
% |
| Hematocrit (F) |
37–47 |
% |
| Platelets |
150–400 |
×10⁹/L |
| MCV |
80–100 |
fL |
| MCH |
27–33 |
pg |
| MCHC |
32–36 |
g/dL |
| RDW |
11.5–14.5 |
% |
Basic Metabolic Panel (BMP)
| Test |
Normal Range |
Units |
| Sodium |
136–145 |
mEq/L |
| Potassium |
3.5–5.0 |
mEq/L |
| Chloride |
98–106 |
mEq/L |
| CO2 (bicarbonate) |
23–29 |
mEq/L |
| BUN |
7–20 |
mg/dL |
| Creatinine |
0.7–1.3 |
mg/dL |
| Glucose (fasting) |
70–100 |
mg/dL |
| Calcium |
8.6–10.2 |
mg/dL |
Comprehensive Metabolic Panel (CMP)
Includes all BMP tests plus:
| Test |
Normal Range |
Units |
| Total Protein |
6.0–8.3 |
g/dL |
| Albumin |
3.4–5.0 |
g/dL |
| Bilirubin (Total) |
0.1–1.2 |
mg/dL |
| ALP |
44–147 |
U/L |
| ALT |
7–56 |
U/L |
| AST |
10–40 |
U/L |
Coagulation Studies
| Test |
Normal Range |
Units |
| PT |
11–13.5 |
sec |
| INR |
0.8–1.2 |
— |
| aPTT |
25–35 |
sec |
| Fibrinogen |
200–400 |
mg/dL |
| D-dimer |
<0.5 |
mcg/mL |
Cardiac Markers
| Test |
Normal Range |
Units |
| Troponin I |
<0.04 |
ng/mL |
| Troponin T |
<0.01 |
ng/mL |
| CK-MB |
0–3 |
ng/mL |
| BNP |
<100 |
pg/mL |
| Pro-BNP |
<125 (<75 age <75) |
pg/mL |
Thyroid Panel
| Test |
Normal Range |
Units |
| TSH |
0.5–5.0 |
mIU/L |
| Free T4 |
0.8–1.8 |
ng/dL |
| Free T3 |
2.3–4.2 |
pg/mL |
| Total T4 |
4.5–12.0 |
mcg/dL |
Lipid Panel
| Test |
Normal Range |
Units |
| Total Cholesterol |
<200 |
mg/dL |
| LDL |
<100 |
mg/dL |
| HDL (M) |
>40 |
mg/dL |
| HDL (F) |
>50 |
mg/dL |
| Triglycerides |
<150 |
mg/dL |
Urinalysis
| Test |
Normal Range |
Units |
| pH |
4.5–8.0 |
— |
| Specific Gravity |
1.005–1.030 |
— |
| Protein |
Negative |
— |
| Glucose |
Negative |
— |
| Ketones |
Negative |
— |
| Blood |
Negative |
— |
| WBC |
0–5 |
/HPF |
| Nitrites |
Negative |
— |
| Bilirubin |
Negative |
— |
References
Reference intervals vary by laboratory method, age, sex, and patient population. Verify with your facility’s lab.
Medical Disclaimer
The content on this page is provided for educational and quick-reference purposes only and does not constitute medical advice. It is not a substitute for professional clinical judgment, your facility's protocols, or the guidance of a qualified licensed healthcare provider. Always verify dosages, reference ranges, and protocols against current evidence-based clinical guidelines and institutional policy before providing care. rnref.com makes no warranty regarding the accuracy or completeness of this information and is not liable for clinical decisions made based on it. See our Terms of Service, Privacy Policy, and Accessibility Statement.