Medical Tests & Clinical Calculators
Understand validated health assessments, screening tools, and clinical scores — clearly, objectively, and responsibly.
What is this test?
Clear clinical purpose, validation population, and peer-reviewed literature citations.
Can I take it?
Step-by-step or grouped interactive tools processed 100% locally in your browser.
What does it mean?
Calibrated severity scales, explicit clinical limitations, and evidence-based next steps.
Popular Clinical Instruments
Widely utilized screening questionnaires and clinical prediction rules in routine practice.
PHQ-9
Patient Health Questionnaire-9
Validated 9-item screening and severity measure for depressive symptoms over the preceding two weeks.
GAD-7
Generalized Anxiety Disorder-7
Validated 7-item instrument for screening and measuring the severity of generalized anxiety disorder.
BMI & BSA Calculator
Body Mass Index & Body Surface Area Calculator
Clinical calculator for Body Mass Index (WHO/CDC) and Mosteller Body Surface Area.
CHA₂DS₂-VASc
CHA₂DS₂-VASc Score for Atrial Fibrillation Stroke Risk
Validated clinical risk score predicting annual thromboembolic stroke risk in non-valvular atrial fibrillation.
Wells Criteria for DVT
Wells Clinical Prediction Rule for Deep Vein Thrombosis
Validated diagnostic decision rule stratifying the pre-test probability of lower-extremity deep vein thrombosis.
CURB-65
CURB-65 Severity Score for Community-Acquired Pneumonia
Validated clinical prediction rule determining 30-day mortality and triage for community-acquired pneumonia.
Browse by Clinical Specialty
Explore validated decision instruments organized by medical and surgical specialty.
Validated clinical screening instruments and symptom severity scales for mood, anxiety, and psychiatric disorders.
High-yield preventive screening, chronic disease stratification, and routine health metrics.
Thromboembolic risk scoring, antiarrhythmic therapy algorithms, and hemodynamic metrics.
Rapid clinical decision rules, pre-test probability scoring, and acute triage instruments.
Pneumonia severity, respiratory failure stratification, and chronic airway metrics.
Validated screening tools for hazardous substance use, withdrawal severity, and dependency.
Glomerular filtration rate estimators, acute kidney injury classification, and CKD staging.
Validated Mood, Anxiety & Well-being Assessments
Standardized questionnaires recommended by the US Preventive Services Task Force (USPSTF) and American Psychiatric Association. Designed to help patients and clinicians monitor symptoms over time.
PHQ-9
Patient Health Questionnaire-9
Validated 9-item screening and severity measure for depressive symptoms over the preceding two weeks.
PHQ-2
Patient Health Questionnaire-2
Ultra-brief two-item first-step depression screener evaluating anhedonia and depressed mood.
GAD-7
Generalized Anxiety Disorder-7
Validated 7-item instrument for screening and measuring the severity of generalized anxiety disorder.
Browse by Health Condition
Clinical context, prevalence data, and relevant instruments for common conditions.
A common psychiatric condition characterized by persistent depressed mood, anhedonia (diminished interest/pleasure), neurovegetative symptoms, and impaired daily functioning.
Excessive, uncontrollable anxiety and worry occurring more days than not for at least 6 months, accompanied by physical restlessness, fatigue, muscle tension, and sleep disturbance.
A spectrum disorder ranging from mild risky consumption to severe chronic alcohol dependence with psychological tolerance, physical withdrawal, and loss of behavioral control.
The most prevalent supraventricular cardiac arrhythmia, predisposing patients to intra-atrial thrombus formation, cardiogenic thromboembolism, and ischemic stroke.
Formation of blood clots in the deep venous system, most commonly the lower extremities, carrying the acute danger of pulmonary embolism (PE) and long-term post-thrombotic syndrome.
Acute pulmonary parenchymal infection contracted outside of hospital or healthcare facility settings, presenting with fever, cough, dyspnea, and pulmonary infiltrate.
Persistent abnormalities of kidney structure or function present for more than 3 months, classified by estimated GFR stages and albuminuria categories.
A complex chronic relapsing disease characterized by excess adiposity that impairs physical health and increases the risk of type 2 diabetes, cardiovascular disease, and all-cause mortality.
Clinical Decision Rules & Formulas
Deterministic medical formulas including CHA₂DS₂-VASc, Wells DVT, CURB-65, and eGFR.
BMI & BSA Calculator
Body Mass Index & Body Surface Area Calculator
Clinical calculator for Body Mass Index (WHO/CDC) and Mosteller Body Surface Area.
CHA₂DS₂-VASc
CHA₂DS₂-VASc Score for Atrial Fibrillation Stroke Risk
Validated clinical risk score predicting annual thromboembolic stroke risk in non-valvular atrial fibrillation.
Wells Criteria for DVT
Wells Clinical Prediction Rule for Deep Vein Thrombosis
Validated diagnostic decision rule stratifying the pre-test probability of lower-extremity deep vein thrombosis.
CURB-65
CURB-65 Severity Score for Community-Acquired Pneumonia
Validated clinical prediction rule determining 30-day mortality and triage for community-acquired pneumonia.
eGFR (2021 CKD-EPI)
Estimated Glomerular Filtration Rate (2021 CKD-EPI Creatinine Equation)
Race-free equation recommended by NKF and ASN to estimate renal glomerular filtration rate from serum creatinine.
Evidence-Based Clinical Guides
Methodological explainers on screening boundaries, decision rules, and risk interpretation.
Screening vs. Diagnosis: Understanding the Boundaries of Clinical Questionnaires
Why a high score on the PHQ-9 or GAD-7 is an indication for diagnostic evaluation rather than a standalone clinical diagnosis.
The Science of Clinical Decision Rules in Acute and Emergency Medicine
How Bayesian pre-test probability, sensitivity, and clinical prediction rules like Wells DVT and CURB-65 prevent over-testing and guide triage.
Understanding Risk Calculators: Absolute vs. Relative Risk in Cardiology
Translating numerical risk scores like CHA₂DS₂-VASc into patient-centered decision-making and guideline-concordant anticoagulation.
Built on Medical Rigor & Clinical Safety
Clinmetric is engineered to satisfy the highest standards of clinical evidence, transparent attribution, and privacy.
PubMed Cited Evidence
Every tool includes authentic original journal citations, authors, publication year, and direct PMID/DOI links.
100% In-Browser Privacy
Assessment calculations run purely client-side. No sensitive answers or health profiles are ever logged to servers.
Deterministic Scoring
Scoring models are strictly data-driven and backed by automated unit test suites verifying minimum, maximum, and boundary values.
Built-in Crisis Protocols
Psychiatric screening tools with self-harm items (e.g. PHQ-9 item 9) immediately surface 24/7 emergency hotline resources.