Common Laboratory Values
Common laboratory values are essential for clinical assessment and diagnosing various conditions.
Summary
Common laboratory values are essential for clinical assessment and diagnosing various conditions. Hemoglobin levels differ by sex, with males having a normal range of 13-18 g/dL and females 12-16 g/dL, useful for detecting anemia. White blood cell count (WBC) ranges from 4,000 to 11,000 per mm³, important for assessing infection or immune status. Platelet count, vital for clotting, should be between 150,000 and 450,000 per mm³. Electrolyte levels such as sodium (Na) and potassium (K) are critical for cardiovascular and cellular functions; normal sodium ranges from 135 to 145 mEq/L and potassium from 3.5 to 5.0 mEq/L. Creatinine levels, typically between 0.6 and 1.3 mg/dL, help assess renal function. Together, these values provide a comprehensive snapshot of hematologic status, immune function, electrolyte balance, and kidney health. Common Misconceptions: Hemoglobin values vary by sex and age, not universally the same; minor fluctuations in electrolytes can have significant physiological effects; normal creatinine ranges can vary slightly with muscle mass and age, so clinical correlation is necessary.
🧠 Key Concepts
- Hemoglobin normal range
- Gender differences in Hgb
- White blood cell count
- Platelet count
- Sodium levels
- Potassium levels
- Creatinine range
- Clinical uses of lab values
- Assessing anemia
- Evaluating kidney function
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Full Notes
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Common laboratory values:
Hemoglobin (Hgb) • Male: 13-18 g/dL • Female: 12-16 g/dL
White Blood Cells (WBC) • 4,000-11,000 /mm³
Platelets • 150,000-450,000 /mm³
Sodium (Na) • 135-145 mEq/L
Potassium (K) • 3.5-5.0 mEq/L
Creatinine • 0.6-1.3 mg/dL
These lab values are important for assessing infection, anemia, kidney function, and electrolyte balance.
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