Category: Lab Calculators

Calculate the volume of a 75 gram or 100 gram glucose load based on the pediatric patient's weight in kilograms. Formula: Volume (oz) = Weight in kilogram x 0.233 oz of 75G Glucose Solution per kilogram body weight Volume (oz) = Weight in kilogram x 0.175 oz of 100G Glucose Solution per kilogram body weight… Continue reading Pediatric OGTT

Percent difference is calculated as the difference between two values, divided by the average of the two values, expressed in terms of percentage. Formula: %Difference = (Value A - Value B) / (Value A + Value B) / 2 x 100 Using Absolute Values While calculating the percent difference, always use absolute values, i.e. ignore… Continue reading Percent Difference

Calculator used to determine the amount of diluent need to get the desired concentration of a known solution. Formula: Initial Concentration (C1) x Initial Volume (V1) = Final Concentration (C2) x Final Volume (V2)Volume of Diluent Needed = Final Volume (V2) - Initial Volume (V1) Principle: Dilution is the process of decreasing the concentration of a solute in… Continue reading Solution Dilution

Manually calculate the sample's INR with the sample's prothrombin Time, average prothrombin time of normal patients, and the reagent's ISI. Formula: INR = (Sample Prothrombin Time / Normal Patients' Prothrombin Time) ISI Principle: The International Normalized Ratio (INR)/International Sensitivity Index (ISI) system was developed as a way to standardize the prothrombin time during the monitoring… Continue reading INR Manual Calculation

Calculate Absolute Neutrophil Count from the Relative Neutrophil Count and total WBC count. Formula: Absolute Neutrophil Count (ANC) = WBC Count (/uL) x Relative Neutrophil Count (%Neutrophil) Indication: An absolute neutrophil count may be used to check for infection, inflammation, leukemia, and other conditions. The lower a person's absolute neutrophil count is, the higher the risk… Continue reading Absolute Neutrophil Count

Calculate the iron saturation (%) from the ratio between serum iron and total iron binding capacity (TIBC). Formula: The percentage saturation of transferrin with iron is calculated by dividing the serum iron concentration by the total iron binding capacity (TIBC) and multiplying by 100. Interpretation of Saturation Values: Transferrin saturation, measured as a percentage, helps… Continue reading Iron Saturation

Calculates gap from the difference between the cations (sodium & potassium) and anions (chloride and bicarbonate) to assess acid base balance. Formula: Anion Gap (mEq/L) = Sodium (mEq/L) + Potassium (mEq/L) - Chloride (mEq/L) - Bicarbonate (mEq/L) Principle: The anion gap (AG) is a measure of acid-base balance. Your body maintains balance by holding onto… Continue reading Anion Gap

Calculates the Mean Corpuscular Volume (MCV), Mean Corpuscular Hemoglobin (MCH), and the Mean Corpuscular Hemoglobin Concentration (MCHC) using Hemoglobin, Hematocrit and RBC Levels. Formula: Mean Corpuscular Volume (MCV) = Hematocrit (%) x 10 / RBC Count in millions/uLMean Corpuscular Hemoglobin (MCH) = Hemoglobin (g/dL) x 10 / RBC Count in millions /uLMean Corpuscular Hemoglobin Concentration… Continue reading RBC Indices

Used to calculate the corrected WBC count when more than 5 nucleated red cells are observed per 100 WBCs counted. Principle: The total number of white blood cells (WBC) in a blood smear is called a WBC count. When you conduct a WBC count, you actually receive a total that includes both WBCs and nucleated… Continue reading Corrected WBC Count

This calculator is used to determine the Estimated Average Glucose (eAG) from an HBA1c (%) result. Formula: The relationship between A1c and eAG is described by the formula eAG = 28.7 x A1c - 46.7