Anion Gap and Delta-Delta Calculator
Calculates anion gap and delta-delta (delta gap) to identify mixed metabolic acid-base disorders. The anion gap identifies high anion gap me...
BUN/Creatinine Ratio
Calculates the BUN-to-creatinine ratio to help differentiate prerenal azotemia from intrinsic acute kidney injury. BUN rises disproportionat...
CKD-EPI 2021 Race-Free eGFR
Estimates glomerular filtration rate (GFR) using the 2021 CKD-EPI creatinine equation, which is race-free and recommended by NIDDK and KDIGO...
Creatinine Clearance (Cockcroft-Gault)
Estimates creatinine clearance using the Cockcroft-Gault formula. Preferred for drug dosing decisions (especially DOACs) per MHRA guidance, ...
Fractional Excretion of Urea (FeUrea)
Calculates the fractional excretion of urea, particularly useful for differentiating prerenal from intrinsic AKI in patients on diuretic the...
Free Water Deficit in Hypernatremia
Calculates the free water deficit to guide correction of hypernatremia. Determines how much free water is needed to lower serum sodium to ta...
Kt/V Urea (Dialysis Adequacy)
Calculates single-pool Kt/V using the second-generation Daugirdas equation for hemodialysis adequacy. Kt/V is the most widely used measure o...
MDRD eGFR
Calculates estimated GFR using the simplified 4-variable MDRD study equation with IDMS-traceable creatinine (re-expressed 2006 version). His...
Osmolal Gap
Calculates the osmolal gap to screen for unmeasured osmotically active substances, particularly toxic alcohols (methanol, ethylene glycol), ...
Sodium Correction Rate for Hyponatremia
Calculates sodium deficit and recommended infusion rate for correcting hyponatremia. Emphasizes safe correction limits to prevent osmotic de...
Urea Reduction Ratio (URR)
Calculates the Urea Reduction Ratio, a simple measure of dialysis adequacy. URR >= 65% corresponds to adequate dialysis in most patients.