Understanding Serum Creatinine Spikes: Why Your Numbers Fluctuate Day to Day

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The short answer: A higher serum creatinine result does not automatically mean your kidneys have suddenly become damaged. Creatinine can change because of hydration, recent illness, diet, muscle activity, medications, and normal biological or laboratory variation. However, a significant or persistent rise can indicate acute kidney injury (AKI) or worsening kidney function and should be … Read more

Stage 3a vs Stage 3b CKD: eGFR Ranges, Progression Risks, and Key Differences

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The short answer: Stage 3a and Stage 3b chronic kidney disease (CKD) are both considered stage 3 CKD, but they represent different levels of reduced kidney function. Stage 3a has an eGFR of 45–59 mL/min/1.73 m², while Stage 3b has an eGFR of 30–44. Stage 3b generally carries greater risk of complications and progression than … Read more