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Lab Terminology
Chemistry Quiz
| Term | Definition |
|---|---|
| Electrolyte | A substance dissolved in blood with a positive or negative charge. |
| 3 primary electrolytes | Sodium, Potassium, Chloride |
| Sodium | Ttransmission of nerve and muscle impulses Normal value: 135-145 mEq/L |
| Hypernatremia | Increased sodium |
| Hyponatremia | Decreased sodium |
| Potassium | Maintains electrical conduction in cardiac and skeletal muscles Normal value: 3.5-5.0 mEq/L KA |
| Hyperkalemia | Increased potassium |
| Hypokalemia | Decreased potassium |
| Chloride | Works with sodium to maintain osmotic pressure in blood Normal value: 98-110 mEq/L |
| Hyperchloremia | Increased chloride |
| Hypochloremia | Decreased chloride |
| Glucose | Major source of energy Normal values: 60-110 mg/dl |
| Hyperglycemia | Increased blood sugar |
| Hypoglycemia | Decreased blood sugar |
| Post-prandial glucose | Blood sugar taken 2 hours after a meal |
| HbA1c | Measures glycosylated hemoglobin Normal value: 2.2-4.8% Good diabetic control: 2.5-5.9% Fair: 6-8% Poor: over 8% |
| CO2 | Adequacy of gas exchange in lungs and acid-base balance |
| BUN | Blood urea nitrogen, reflects kidney function Normal value: 10-20 mg/dl |
| Creatinine | Breakdown product of creatine, reflects Normal: 0.5-1.1 mg/dl |
| 2 substances reflected in a total protein | Albumin and globulin |
| Albumin | Made in the liver, helps maintain osmotic pressure in blood 60% of total protein represented |
| Bilirubin | Breakdown product of hemoglobin. Direct is water soluble, indirect is not. Normal value of total bilirubin: 0.3-1.0 mg/dl 2.5 mg/dl and over indicate jaundice. |