A focused collection of 12 calculators, scores, and clinical references.
Explanation and clinical context Basal metabolic rate estimated by the Mifflin St Jeor equation reflects resting energy expenditure in adults and is widely used due to its accuracy across different populations. Total daily energy expenditure combines basal metabolic rate with an activity factor to estimate energy needs for weight maintenance. Adjustments for weight gain or loss typically use a fifteen percent change
HbA1c percent Estimated Average Glucose eAG Explanation and Clinical Context Estimated Average Glucose represents a practical translation of HbA1c into a glucose value expressed in mg per dL which helps clinicians and patients understand long term glycemic exposure in a more intuitive format. The relationship between HbA1c and eAG was established through large population studies that correlated continuous glucose mon
Explanation and Clinical Context HbA1c represents the proportion of hemoglobin that becomes glycated through continuous exposure to circulating glucose. It reflects the average glycemic state over approximately three months and has become a central parameter in the evaluation and long term monitoring of diabetes. Converting HbA1c into an estimated average glucose offers a more intuitive representation for both clinic
Explanation and Clinical Context The Homeostatic Model Assessment for Insulin Resistance is a widely used method to estimate insulin resistance from fasting glucose and fasting insulin levels. The formula is fasting glucose in mg per dL multiplied by fasting insulin in micro IU per mL divided by four hundred five. This indirect method reflects the balance between hepatic glucose output and pancreatic beta cell functi
Explanation and Clinical Context This calculator estimates prandial insulin dose by combining carbohydrate coverage with glucose correction therapy. Total daily insulin dose provides a practical anchor to derive two key parameters. The insulin to carbohydrate ratio reflects how many grams of carbohydrate are covered by one unit of rapid acting insulin. The correction factor describes how much one unit of insulin will
Insulin to Carbohydrate Ratio Explanation and Clinical Context Insulin to Carbohydrate Ratio represents the estimated amount of carbohydrate covered by one unit of rapid acting insulin. It is commonly calculated using the empirical five hundred rule which divides five hundred by the total daily insulin requirement. This approach assumes a predictable relationship between daily insulin needs and postprandial glucose r
Metabolic Syndrome Diagnostic Criteria Explanation and Clinical Context Metabolic syndrome represents a clustering of interrelated metabolic abnormalities that increase the risk of cardiovascular disease and type two diabetes. The diagnostic criteria used in this tool follow the Adult Treatment Panel Three guidelines which define metabolic syndrome as the presence of at least three of five components. These include a
QUICKI Insulin Sensitivity Index Explanation and Clinical Context QUICKI is a validated surrogate marker to estimate insulin sensitivity that uses fasting glucose and fasting insulin values. It provides a simple and reproducible method to screen metabolic health in clinical and research settings. The mathematical structure of QUICKI gives a continuous scale where lower values reflect diminished insulin sensitivity su
Sodium Correction in Hyperglycemia Explanation and Clinical Context Sodium correction in the setting of hyperglycemia is essential because elevated serum glucose increases plasma osmolality and shifts water from the intracellular compartment into the extracellular compartment. This movement dilutes serum sodium and leads to a factitious reduction in the measured value. Correcting sodium helps clinicians assess the tr
This tool converts the dose of a selected glucocorticoid to the equivalent dose of another glucocorticoid based on established relative anti inflammatory potency. Steroid Dose Conversion Explanation and Clinical Context Glucocorticoids vary in anti inflammatory potency mineralocorticoid activity and biological half life so dose conversion is required to maintain therapeutic equivalence when switching agents. Hydrocor
TSH (mIU per L) Free T4 (ng per dL) Thyroid Function Index Panel Explanation and Clinical Context The Thyroid Function Index is an integrated measure that combines serum TSH and free T4 to provide a more stable and physiologically relevant indicator of thyroid status. TSH alone can fluctuate because of pituitary dynamics and non thyroidal influences while free T4 may remain within reference intervals in early thyroid
Age BMI Waist Circumference in cm Physical Activity less than thirty minutes per day No Yes Family History of Diabetes in first degree relative No Yes History of Hypertension No Yes Type 2 Diabetes Risk Score Explanation and Clinical Context This tool estimates the risk of developing type 2 diabetes using simple clinical variables including age, body mass index, waist circumference, physical activity, family history