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Common Foundational Labs
Normal Electrolyte Lab Values
Potassium (K+)
3.5 to 5.0 mEq/L
Calcium (Ca2+)
8.5 to 10.5 mg/dL
Phosphate (PO43–)
2.5 to 4.5 mg/dL
Magnesium (Mg2+)
1.5 to 2.5 mEq/L
Sodium (Na+)
135 to 145 mEq/L
Chloride (Cl–)
95 to 105 mEq/L
2 mins
BUN (Blood Urea Nitrogen) Lab Values
10-20 mg/dL
40 secs
Creatinine Lab Values
Measures Renal Function
0.6 - 1.3 mg/dL
1 min
Albumin Lab Value
3.5 - 5.5 g/dL
49 secs
Liver Enzyme Tests: AST and ALT
AST/ALT Ratio
AST: 8-20 U/L
ALT: 8-20 U/L
1 min
WBC Differential Lab Value
White Blood Cells (WBC)
5-10 (5,000-10,000)
Leukocyte Differential
Neutrophils (50%-70%)
Bands (2%-5%)
Segs (50%-70%)
Lymphocytes (20%-40%)
Monocytes (4%-8%)
Eosinophils (2%-4%)
Basophils (0.5%-1.5%)
2 mins
Hemoglobin (Hgb) Lab Values
Men: 13 - 17 g/dL
Women: 12 - 16 g/dL
47 secs
Hematocrit (Hct) Lab Values
Women: 36% - 46%
Men: 41% - 53%
1 min
PT/PTT Lab Values
Prothrombin Time (PT)
10-14 seconds
Activated Partial Thromboplastin Time (PTT or aPTT)
25-35 seconds
1 min
INR Lab Value
0.8-1.2 Normal Range
Warfarin
2.0-3.0
1 min
Platelet Lab Value
150,000-400,000 Micro L
40 secs
Blood Glucose Lab Value
70-100 mg/dL
25 secs
Hemoglobin A1c Lab Value
4-6%
1 min
Cholesterol Lab Values
LDL (Low Density Cholesterol)
< 100 mg/dL
HDL (High Density Cholesterol)
> 40 mg/dL Males
> 50 mg/dL Females
Total Cholesterol
< 200 mg/dL
1 min
Triglycerides Lab Value
< 150 mg/dL
51 secs
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