Medical Laboratory Calculators

80 free tools in this category.

Folders

• Hematology - Blood counts, indices and hematology calculations.
• Biochemistry - Kidney, liver, lipid, glucose and electrolyte calculators, plus quality control.
• Microbiology - Colony counts, dilutions, growth and diagnostic test statistics.
• Blood Bank - Transfusion volumes, blood volume, RhIG dose and compatible unit planning.

• RBC Indices Calculator - MCV, MCH and MCHC from one set of values.
• MCV Calculator - Mean corpuscular volume.
• MCH Calculator - Mean corpuscular hemoglobin.
• MCHC Calculator - Mean corpuscular hemoglobin concentration.
• Absolute Neutrophil Count Calculator - Absolute neutrophil count from WBC and differential.
• Absolute Eosinophil Count Calculator - Absolute eosinophil count from WBC and differential.
• Absolute Lymphocyte Count Calculator - Absolute lymphocyte count from WBC and differential.
• Absolute Monocyte Count Calculator - Absolute monocyte count from WBC and differential.
• Absolute Basophil Count Calculator - Absolute basophil count from WBC and differential.
• Corrected WBC Count Calculator - Correct WBC for nucleated red cells.
• Corrected Reticulocyte Count Calculator - Retic % corrected for anemia.
• Reticulocyte Production Index Calculator - RPI with maturation correction.
• Mentzer Index Calculator - Compare microcytic anemia patterns.
• Neutrophil-to-Lymphocyte Ratio Calculator - NLR from absolute counts.
• Platelet-to-Lymphocyte Ratio Calculator - PLR from platelet and lymphocyte counts.
• Systemic Immune-Inflammation Index Calculator - SII from platelets, neutrophils and lymphocytes.
• Corrected Calcium Calculator - Calcium adjusted for albumin.
• Anion Gap Calculator - Serum anion gap without potassium.
• Globulin Calculator - Globulin from total protein and albumin.
• Albumin/Globulin Ratio Calculator - A/G ratio.
• BUN/Creatinine Ratio Calculator - Ratio of urea nitrogen to creatinine.
• Estimated GFR Calculator - CKD-EPI 2021 creatinine equation (race-free).
• Creatinine Clearance Calculator - Cockcroft-Gault estimate.
• Corrected Sodium Calculator - Sodium corrected for hyperglycemia.
• Calculated Serum Osmolality Calculator - Estimated osmolality.
• LDL Cholesterol Calculator - Friedewald estimate.
• Non-HDL Cholesterol Calculator - Total minus HDL.
• Total Cholesterol/HDL Ratio Calculator - Atherogenic ratio.
• Estimated Average Glucose Calculator - eAG from HbA1c.
• Body Mass Index Calculator - BMI from weight and height.
• Immature Granulocyte Count Calculator - Absolute immature granulocytes (IG).
• Absolute Nucleated RBC Count Calculator - NRBC per uL.
• Osmolar Gap Calculator - Measured minus calculated serum osmolality.
• Delta Ratio (Delta Gap) Calculator - Anion gap and delta ratio for mixed acid-base disorders.
• Albumin-Corrected Anion Gap Calculator - Anion gap adjusted for low albumin.
• LDL Cholesterol (Sampson / NIH) Calculator - LDL-C by the Sampson equation, valid up to triglycerides of 800 mg/dL.
• Atherogenic Index of Plasma (AIP) Calculator - log10 of the triglyceride to HDL ratio.
• Transferrin Saturation Calculator - Serum iron as a percentage of total iron-binding capacity.
• HOMA-IR and HOMA-Beta Calculator - Insulin resistance and beta-cell function from fasting values.
• Fractional Excretion of Sodium (FENa) Calculator - Helps separate prerenal from intrinsic kidney injury.
• Fractional Excretion of Urea (FEUrea) Calculator - FEUrea, useful when diuretics make FENa unreliable.
• Urine Albumin-Creatinine Ratio (UACR) Calculator - Albuminuria category from a spot urine sample.
• Pediatric eGFR (Bedside Schwartz) Calculator - Estimated GFR for children from height and creatinine.
• Free Water Deficit Calculator - Water needed to correct high serum sodium.
• Calcium-Phosphate Product Calculator - Serum calcium multiplied by phosphate.
• Indirect Bilirubin Calculator - Unconjugated bilirubin from total and direct values.
• AST/ALT Ratio (De Ritis) Calculator - Ratio of AST to ALT.
• FIB-4 Index Calculator - Non-invasive liver fibrosis score.
• APRI Calculator - AST to platelet ratio index for liver fibrosis.
• MELD and MELD-Na Calculator - End-stage liver disease severity scores.
• Child-Pugh Score Calculator - Severity class of chronic liver disease.
• HbA1c Converter (% and mmol/mol) - Convert between NGSP percent and IFCC mmol/mol.
• Clinical Lab Unit Converter - Convert common analytes between conventional and SI units.
• Body Surface Area (BSA) Calculator - BSA by the Mosteller and DuBois formulas.
• Absolute Reticulocyte Count Calculator - Reticulocyte percentage converted to an absolute count.
• Hematocrit and Hemoglobin Rule of Three - Quick estimate of hematocrit from hemoglobin or the reverse.
• Manual Cell Count (Hemocytometer) Calculator - Cells per microliter from a counting chamber.
• Allowable Blood Loss Calculator - Maximum blood loss before reaching a chosen hematocrit.
• Iron Deficit (Ganzoni) Calculator - Total iron needed to correct anemia and refill stores.
• Estimated Blood Volume (Nadler) Calculator - Blood volume from height, weight and sex.
• Corrected Count Increment (CCI) Calculator - Response to a platelet transfusion.
• Fetomaternal Hemorrhage and RhIG Dose Calculator - Fetal bleed volume and number of Rh immune globulin vials.
• PRBC Volume to Raise Hemoglobin Calculator - Estimated red cell volume for a target hemoglobin.
• Transfusion Volume by Weight Calculator - Typical paediatric component doses.
• Exchange Transfusion Volume Calculator - Blood volume for a neonatal exchange transfusion.
• Compatible Unit Probability Calculator - How many units to screen when antibodies need antigen-negative blood.
• CFU per mL Calculator - Colony count converted to CFU per mL.
• Serial Dilution Calculator - Final concentration and volumes for a dilution series.
• McFarland Standard Adjustment Calculator - Diluent needed to bring a suspension to a target turbidity.
• Log Reduction Calculator - Log10 reduction and percent reduction in microbial count.
• Bacterial Doubling Time Calculator - Generations and generation time from two counts.
• C1V1 = C2V2 Dilution Calculator - Stock volume and diluent for a working solution.
• Molarity to Mass Calculator - Grams of solute for a molar solution.
• Diagnostic Test Accuracy (2x2 Table) Calculator - Sensitivity, specificity, predictive values and likelihood ratios.
• Predictive Value (PPV and NPV) Calculator - Predictive values from sensitivity, specificity and prevalence.
• QC: CV% and Sigma Metric Calculator - Coefficient of variation and sigma score for an assay.
• Levey-Jennings Z-Score Calculator - How many SD a control result is from the mean.
• Malaria Parasite Density (Thick Smear) Calculator - Parasites per microliter of blood.
• Membrane Filter Count (CFU per 100 mL) Calculator - Water testing colony count by membrane filtration.
• Urine Culture Colony Count Calculator - CFU/mL from a calibrated loop.