Logo

OpiCalc

FavoritesSpecialtiesDrugsGuidelinesMost Used

Quick Access

Favorites
Most Used

All Specialties

OpiCalc Logo
Clinical CalculatorsDrugsGuidelines
SpecsDrugsGuides
ABCD2 ScoreACR CriteriaCorrected SodiumFENaHEART ScoreLights CriteriaNEWS2NRS-2002Osmolality GapRCRI (Lee Score)TTKG
OpiCalc Logo

OpiCalc

Easy, fast, and private medical tools for clinicians. Always free.

No Login Required
Ready for the Bedside

Resources

About UsEditorial PolicyMedical DisclaimerPrivacy PolicyTerms of UseCookie Policy

Support

Contact Us

Clinical Notice:OpiCalc is not a substitute for professional clinical judgment. Always verify dosages and guidelines.

OpiCalc © 2026

•

All Rights Reserved

NRS-2002

NRS-2002 — Nutritional Risk Screening: ESPEN-recommended tool for all hospitalised patients. Score ≥ 3 = nutritional risk. Mandatory screening within 24h of admission in many NHS/EU hospitals.

Step 1 — Initial Screening

No criteria met — Re-screen weekly or if clinical status changes.

Guidelines & Evidence

Verified

Last Review: 2026-07-17

When to Use

When to Use

Identifying hospitalized patients who are at risk of malnutrition
Triggering a formal dietary and nutritional support intervention (enteral/parenteral nutrition)
Standardizing nutritional assessment on admission to the hospital

Patient Population

All adult patients admitted to the hospital. Strongly endorsed by ESPEN (European Society for Clinical Nutrition and Metabolism).

How it Works

Two-Step Process

01
Initial Screening: Are BMI < 20.5? Weight loss in last 3 months? Reduced intake in last week? Severe illness? (If ANY Yes, proceed to final screening)
02
Final Screening Part 1 (Impaired Nutritional Status): Scores 0 to 3 based on severity of weight loss and reduced oral intake.
03
Final Screening Part 2 (Severity of Disease): Scores 0 to 3 based on metabolic stress (e.g., hip fracture=1, major abdominal surgery=2, ICU with APACHE >10 = 3).
04
Age Modifier: Add 1 point if age ≥ 70 years.

Interpretation Thresholds

Score ≥ 3Patient is nutritionally at-risk. A nutritional care plan should be initiated.
Score < 3Not currently at risk, but should be rescreened weekly during hospitalization.

Clinical Pearls

Clinical Pearl

NRS-2002 recognizes that malnutrition is driven by two factors: lack of intake AND hypercatabolism from severe illness. A previously well-nourished 35-year-old trauma patient in the ICU automatically scores 3 points (severe illness) and thus triggers nutritional support, despite having no prior weight loss.

Known Limitations

Does not apply well to pregnant patients or pediatric populations.
Cannot be calculated accurately if height/weight cannot be measured (though proxy estimates can be used).
Relies heavily on patient recall for recent weight loss and intake reduction.

Next Steps

Actionable Clinical Management

01
1. Score ≥ 3: Consult clinical dietetics immediately.
02
2. If the gut works, use it: Prioritize oral nutritional supplements (ONS). If oral intake is inadequate, initiate enteral feeding (NG or NJ tube).
03
3. If the gut fails (ileus, obstruction, severe malabsorption), initiate total parenteral nutrition (TPN) carefully to avoid refeeding syndrome.
04
4. In patients at high risk (Score > 5), initiate feeding slowly and monitor Phosphorus, Magnesium, and Potassium daily to preempt refeeding syndrome.

The Evidence

Derivation Study

Nutritional risk screening (NRS 2002): a new method based on an analysis of controlled clinical trials.

Kondrup J et al. • Clin Nutr.. 2003;Vol 22(3): 321-336. Validated the tool against clinical outcomes (length of stay, complications).

Last Comprehensive Review: 2026-07-17

Recent Journal Updates

Cancer MedicineJul 22, 2026
Analysis of Age, Period and Cohort Trends in Cervical In Situ and Invasive Carcinomas for Assessing the Utility of Screening Approaches—Results From the Saarland Cancer Registry

Clinical Context

We think this might be relevant to the clinical guidance for NRS-2002 (Nutritional Risk Screening).

Clinical Pharmacology TherapeuticsJul 20, 2026
Population Pharmacokinetic Modeling for the Iminosugar Lucerastat Supports Dose Adaptation in Patients With Fabry Disease and Moderate to Severe Renal Function Impairment

Clinical Context

We think this has broad domain relevance to NRS-2002 (Nutritional Risk Screening).

WHO NewsJul 18, 2026
WHO Member States continue negotiations on the Pathogen Access and Benefit Sharing Annex

Clinical Context

We think this has broad domain relevance to NRS-2002 (Nutritional Risk Screening).