Blog
Cystatin C vs eGFRcr-cys: which kidney estimate to trust
Cystatin C and eGFRcr-cys can clarify kidney function when creatinine is biased by muscle, diet, or age. Learn which estimate to trust first.
High bilirubin with normal liver enzymes: what it can mean
High bilirubin with normal liver enzymes is often Gilbert syndrome or transient context, but direct bilirubin, hemolysis, and symptoms change the next step.
GGT normal but ALT high: what pattern suggests next
GGT normal but ALT high can point to liver-cell injury, muscle effects, fatty liver risk, medications, or transient noise. Learn what to check next.
Cataracts and cognitive aging: shared risk or vision-loss effect?
Cataracts and cognitive aging may overlap through vision loss, shared vascular risk, activity changes, and confounding. Learn what the evidence suggests.
eGFR dropped suddenly: dehydration, lab variation, or kidney risk?
If eGFR dropped suddenly, dehydration, recent illness, medications, lab variation, or kidney stress may explain it. Learn what to recheck and when to ask for help.
Heat waves and biological age: who is most vulnerable?
Heat waves and biological age intersect through dehydration, sleep loss, cardiovascular strain, kidney stress, and medications. Learn who is vulnerable.
AST high with normal ALT: muscle, alcohol, or liver signal?
AST high with normal ALT can point to muscle injury, exercise, alcohol pattern, hemolysis, medications, or liver context. Learn what to compare.
Creatinine normal but eGFR low: how age changes the equation
Creatinine can look normal while eGFR is low because eGFR adjusts for age, sex, and filtration estimates. Learn what to compare before assuming kidney disease.
Potassium slightly high: sample error or real signal?
Potassium slightly high can come from hemolysis, sample handling, medications, kidney context, or true hyperkalemia. Learn what to repeat before changing diet.