NRI Nutritional Risk Index Calculator

Tool Introduction

The NRI (Nutritional Risk Index) Nutritional Risk Index Calculator is a professional online tool designed to help users quickly assess their nutritional status and the risk of malnutrition. By entering key physiological indicators such as serum albumin, current weight, and usual weight, this tool can calculate the NRI value based on a standard formula and classify your nutritional status accordingly, providing valuable reference for personal health management and clinical nutritional assessment.

How to Use

1. Enter your serum albumin value (unit: g/L). This is a required field, usually obtained through a blood test.
2. Enter your current weight (unit: kg). This is a required field; please ensure the data is accurate.
3. Enter your usual weight (unit: kg). This is a required field, referring to your typical, relatively stable weight, used to assess weight changes.
4. Click the "Calculate" button, and the tool will calculate the NRI value based on the data you provide and display your nutritional status.

Input Parameter Requirements:

• Serum Albumin: Numeric type, range 0-100 g/L, default value 40 g/L.
• Current Weight: Numeric type, range 10-200 kg, default value 65 kg.
• Usual Weight: Numeric type, range 10-200 kg, default value 70 kg.

Output Result Format:

The tool will display the calculation results in a list format, including:

• Nutritional Risk Index (NRI): The specific calculated value.
• Nutritional Status: The degree of malnutrition determined by the NRI value (no malnutrition, mild malnutrition, moderate malnutrition, severe malnutrition), intuitively displayed as badges with different colors (e.g., no malnutrition - green, severe malnutrition - red).
• Normal Range: (This item usually indicates the normal range of NRI; this tool will provide the corresponding judgment result).

NRI Calculation Formula

The NRI Nutritional Risk Index is calculated based on the following classic formula:

NRI = [1.519 × Serum Albumin (g/L)] + [41.7 × (Current Weight / Usual Weight)]

Where:

• Serum Albumin: Serum albumin concentration in g/L.
• Current Weight: Current weight in kg.
• Usual Weight: Usual weight in kg, used to measure the degree of weight loss.

Based on the NRI calculation results, nutritional status is usually classified as follows:

• NRI ≥ 100: No malnutrition
• 97.5 ≤ NRI < 100: Mild malnutrition
• 83.5 ≤ NRI < 97.5: Moderate malnutrition
• NRI < 83.5: Severe malnutrition

 

Frequently Asked Questions

• Q: What is the NRI Nutritional Risk Index?
• A: NRI (Nutritional Risk Index) is a commonly used nutritional assessment tool that combines serum albumin levels and weight changes to assess an individual's risk and severity of malnutrition, often used for nutritional screening and assessment of hospital patients.
• Q: What do the calculation results indicate?
• A: The calculated NRI value corresponds to different nutritional status classifications: no malnutrition, mild malnutrition, moderate malnutrition, or severe malnutrition. These classifications guide healthcare professionals or individuals in understanding their current nutritional health status.
• Q: How often should I assess my NRI?
• A: For healthy individuals, frequent assessment is usually not necessary. However, for people with chronic diseases, post-operative recovery, the elderly, or those with abnormal weight changes, regular assessment (e.g., monthly or quarterly) is recommended to promptly identify and intervene in nutritional problems.
• Q: What should I do if the results show malnutrition?
• A: If the NRI results suggest malnutrition, it is recommended to consult a professional nutritionist or doctor. They will provide a personalized nutritional intervention plan based on your specific situation, such as adjusting your diet, supplementing with nutritional preparations, etc.

Precautions

• Data Accuracy: Please ensure that the entered serum albumin, current weight, and usual weight data are accurate. Incorrect input will lead to inaccurate calculation results.
• Unit Consistency: All input data must strictly follow the specified units (serum albumin g/L, weight kg).
• Reference Only: The calculation results of this tool are for preliminary nutritional risk assessment reference only. Any diagnosis and treatment decisions should be made by professional medical personnel based on a comprehensive clinical assessment.
• Definition of Usual Weight: "Usual weight" should be your stable weight when you are in a healthy state, without obvious illness or intentional weight gain or loss, usually the average weight over the past six months to a year.