Understand your comprehensive metabolic panel, lipid panel, kidney function, and other key lab tests for diabetes management.
Regular lab work is essential for managing diabetes effectively. This guide explains the key tests, what the numbers mean, and when to be concerned.
| Test | Normal Range | What It Measures |
|---|---|---|
| Glucose (Fasting) | 70-100 mg/dL | Blood sugar after 8+ hour fast |
| BUN | 7-20 mg/dL | Kidney function indicator |
| Creatinine | 0.7-1.3 mg/dL | Kidney filtration rate |
| eGFR | >60 mL/min | Estimated kidney function |
| Sodium | 136-145 mEq/L | Electrolyte balance |
| Potassium | 3.5-5.0 mEq/L | Important for heart/muscle function |
Diabetes significantly increases cardiovascular risk, making lipid management crucial:
| Test | Optimal for Diabetics | Why It Matters |
|---|---|---|
| Total Cholesterol | <200 mg/dL | Overall cardiovascular risk marker |
| LDL Cholesterol | <100 mg/dL (or <70 if high risk) | Primary driver of atherosclerosis |
| HDL Cholesterol | >40 mg/dL (men), >50 (women) | Protective; removes cholesterol from arteries |
| Triglycerides | <150 mg/dL | Often elevated in poorly controlled diabetes |
Diabetes is the leading cause of kidney disease. Monitor these closely:
| Test | What to Watch For | Frequency |
|---|---|---|
| Urine Albumin-to-Creatinine Ratio (UACR) | <30 mg/g is normal; >300 indicates significant damage | Annually |
| eGFR | Below 60 suggests kidney disease; below 15 is kidney failure | Annually or more if declining |
| Serum Creatinine | Rising levels indicate declining kidney function | With each CMP |
Important because diabetes medications are processed by the liver:
Red Flags
• A1C jumping more than 1% between tests • eGFR dropping below 60 or declining rapidly • New protein in urine (albuminuria) • Significant lipid changes • Liver enzymes more than 3x normal
| Test | Stable Diabetes | Newly Diagnosed/Changing |
|---|---|---|
| A1C | Every 6 months | Every 3 months |
| Fasting Glucose | Daily or per doctor | Multiple times daily |
| Lipid Panel | Annually | Every 3-6 months until stable |
| Kidney Function (UACR, eGFR) | Annually | Every 3-6 months |
| Comprehensive Metabolic Panel | Annually | Every 3-6 months |
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