ConvertMedUnits

Calculator Category

Specialty & Critical Care

Pediatric, neonatal, ICU, neurology, oncology, autoimmune, and specialty lab calculators.

About Specialty & Critical Care Conversions

The specialty and critical care category gathers the conversions and calculators used most in emergency, intensive care and specialist settings: the anion gap and albumin-corrected anion gap for acid-base problems, electrolyte conversions using ion valence (mEq/L and mmol/L), enzyme activity units (U/L, IU/L and µkat/L), bilirubin for jaundice and newborns, and renal tools such as creatinine clearance and eGFR for medication dosing.

These are the values that often need converting quickly and correctly under pressure, where a unit mix-up matters. Rather than a single generic converter, each tool here is built around the specific relationship it needs — ion valence for electrolytes, a fixed factor for bilirubin, or a full equation for anion gap and kidney function — and shows the working so the result can be trusted and double-checked.

Available Calculators

Browse all specialty & critical care tools available on ConvertMedUnits.com.

µkat/L to U/L Conversion Calculator Convert enzyme activity units often seen in liver, metabolic, and specialty chemistry panels. U/L to µkat/L Conversion Calculator Convert enzyme activity values from U/L to SI-style microkatals per liter. U/L to IU/L Conversion Calculator Convert enzyme activity labels between U/L and IU/L for liver, pancreatic, and specialty chemistry results. Calcium Conversion Calculator Convert total or ionized calcium units for electrolyte, metabolic, and critical care review. Anion Gap Calculator Calculate anion gap and albumin-corrected anion gap for ICU, emergency, and acid-base review. Creatinine Clearance Calculator Estimate Cockcroft-Gault creatinine clearance for renal and medication dosing review. eGFR Calculator (CKD-EPI 2021) Estimate glomerular filtration rate and CKD stage with the race-free CKD-EPI 2021 equation. Caffeine Unit Converter Convert caffeine levels for neonatal, ICU, or toxicology lab review. Lidocaine Unit Converter Convert lidocaine levels for ICU, anesthesia, or toxicology lab review. Bilirubin mg/dL to µmol/L Calculator Convert bilirubin values for liver, jaundice, newborn, and specialty lab review. mEq/L to mmol/L Conversion Calculator Convert electrolyte values for ICU, fluid, and acid-base review using ion valence. mmol/L to mEq/L Conversion Calculator Convert SI electrolyte values to milliequivalents for critical care and fluid calculations.

Frequently Asked Questions

Common questions about specialty & critical care lab unit conversions.

What is the anion gap used for?

The anion gap helps classify metabolic acidosis in emergency and critical care. It is calculated from sodium, chloride and bicarbonate, and is often corrected for albumin because low albumin narrows the apparent gap.

Why do electrolytes convert differently from other tests?

Electrolytes such as sodium, potassium and calcium convert between mEq/L and mmol/L using the ion's valence (charge), not molecular weight alone. That is why they have their own dedicated converters.

What is the difference between eGFR and creatinine clearance?

Both estimate kidney function from creatinine. eGFR (CKD-EPI 2021) is the standard for staging chronic kidney disease, while Cockcroft-Gault creatinine clearance is still used for some medication dosing.