Tested on Gulf Medical Boards (DHA, SMLE, MOH & HAAD)
Clinical calculations and diagnostic scoring systems like Alvarado Score (MANTRELS) frequently appear on Prometric exams. Master high-yield clinical vignettes with instant AI-powered pathophysiology rationales.
What is the Alvarado Score (MANTRELS)?
The Alvarado Score (MANTRELS) is an evidence-based clinical decision rule engineered to quantify diagnostic probability, stratify clinical severity, and guide therapeutic decision-making in general surgery practice. The Alvarado Score (also known by the acronym MANTRELS) is a clinical scoring system used in the diagnosis of appendicitis. It utilizes 6 clinical features and 2 laboratory measurements. Clinical scoring tools like Alvarado Score (MANTRELS) are essential in acute and outpatient management, enabling clinicians to objectively differentiate between low-risk candidates suitable for conservative therapy and high-risk patients requiring urgent interventions. Verified against current 2026 clinical standards, this tool is extensively tested on Gulf health authority licensing exams including DHA (Dubai), SMLE (Saudi Arabia), MOH, HAAD/DOH (Abu Dhabi), OMSB (Oman), and QCHP (Qatar).
💡Clinical Pearls & Diagnostic Utility
Highly sensitive for ruling out appendicitis at low scores (<4) and useful for deciding who needs imaging vs direct surgical consultation.
Formula & Calculation Parameters
The mathematical equation and clinical variables required to calculate Alvarado Score (MANTRELS):
Score Interpretation & Clinical Stratification
| Score Range | Clinical Interpretation | Risk Tier |
|---|---|---|
| ≤ 3 | Low Probability | green |
| 4 – 6 | Moderate Probability | yellow |
| ≥ 7 | High Probability | red |
When to Exercise Caution
Less accurate in children and women of child-bearing age where gynecological pathology can mimic appendicitis. Imaging is frequently still required in moderate/high risk patients.
Clinical Review Board
Dr. Muhammad Nouman, MBBS
Capital Medical University | PMDC Reg No: 117744-P
Clinical Audit Status
✓ Verified for 2026 Guidelines
Last updated: 2026-08-07
Peer-Reviewed Medical Literature
- •Alvarado A. A practical score for the early diagnosis of acute appendicitis. Ann Emerg Med. 1986;15(5):557-564.
Related General Surgery Calculators & Scoring Tools
Explore related clinical calculators, risk stratification indexes, and diagnostic scoring algorithms in General Surgery:
Wells' Criteria for DVT
Calculates the pre-test probability of Deep Vein Thrombosis.
Glasgow Coma Scale (GCS)
Assesses the level of consciousness after neurological injury.
qSOFA Score
Quick Sequential Organ Failure Assessment for sepsis risk.
Centor Score
Estimates probability of streptococcal pharyngitis.
Mean Arterial Pressure (MAP)
Calculate MAP based on Systolic and Diastolic Blood Pressure.
CURB-65 Score for Pneumonia
Estimates mortality of community-acquired pneumonia to help determine inpatient vs. outpatient treatment.