How is POTS evaluated: active stand test, tilt-table test and other tests?

How POTS is evaluated: clinical history, heart rate and blood pressure measured lying and standing, an ECG and targeted tests to look for other causes.

12 sources
7 min read
Clinical review
Verified 8 November 2026

Key points

Diagnosis rests on the combination of chronic orthostatic symptoms, a sustained rise in heart rate within 10 minutes of standing up, and the absence of orthostatic hypotension meeting the diagnostic thresholds. Alternative causes must be looked for. ^{[1, 2]}
The active stand test measures heart rate, blood pressure and symptoms after a period of lying down at rest. In its post-COVID guide, the French National Authority for Health (HAS) describes 10 minutes of rest followed by measurements at 1, 3, 5 and 10 minutes of standing. This is a clinical protocol, not a self-test. ^[3]
The tilt-table test is an alternative or additional test performed under monitoring; for POTS evaluation, the EFAS/AAS/EAN consensus proposes a 60° to 80° tilt for 10 minutes after a lying-down rest phase of at least 5 minutes. ^[4]
A test is not enough on its own: orthostatic tachycardia without symptoms is nonspecific, and dehydration, anemia, infection, a medication or another condition can explain a faster heart rate. ^{[4, 2]}
A 12-lead ECG is recommended from the outset; other tests (blood work, Holter monitoring, echocardiography, autonomic testing) are chosen based on the history and examination. Orthostatic intolerance that affects daily functioning can exist without reaching the POTS heart-rate threshold; the 2026 international consensus describes these situations as “non-POTS dysautonomia.” ^{[5, 2, 6]}

What the evaluation aims to establish

General clinical criteria

What is established

The criteria summarized in the current literature generally include:

frequent symptoms of orthostatic intolerance that worsen when standing and improve when lying down;
a sustained heart-rate increase of at least 30 beats per minute in adults, or 40 beats per minute between ages 12 and 19, within 10 minutes of moving to an upright position (standing up or being tilted upright);
the absence of classic orthostatic hypotension (a sustained drop in blood pressure of at least 20 mmHg systolic or 10 mmHg diastolic within the first 3 minutes, according to the 2018 ESC guideline, also used by HAS);
a minimum symptom duration, set at 3 months in most documents (see below);
the absence of another cause that better explains the sinus tachycardia.

The thresholds and duration have varied across documents and over time. Current reviews generally use a sustained rise of at least 30 bpm in adults and 40 bpm between ages 12 and 19 during the 10 minutes of standing or tilt, but the minimum symptom duration has not been worded identically in all historical documents. The 3-month minimum duration appears in the 2019 NIH consensus, the 2020 Canadian position statement and the 2022 CMAJ review; the 2015 HRS consensus does not set one, and it defined the measurement as taken after more than 30 seconds of standing. ^{[5, 7, 1, 2, 6]}

The 2018 European Society of Cardiology (ESC) syncope guideline also accepts, on active standing, a standing heart rate above 120 beats per minute. It also provides the definition of classic orthostatic hypotension given above. ^{[12, 3]}

Active stand test

What is established

The active stand test consists of measuring heart rate and blood pressure while lying down, then repeating these measurements after standing up, while noting symptoms. In the 2024 HAS post-COVID guide, testing for POTS is described after 10 minutes of lying-down rest, with measurements at 1, 3, 5 and 10 minutes after standing up. ^[3]

These measurements describe clinical evaluation protocols; they are not instructions for self-testing or self-diagnosis. Performing and interpreting the test must take into account symptoms, the medical context and the measurement conditions.

The test must be interpreted in its clinical context. An abnormal result is not enough to establish the diagnosis if the symptoms, their duration, the absence of orthostatic hypotension or the exclusion of other causes are not all present. ^{[4, 2, 9]}

Comparing protocols and the limits of interpretation

Tilt-table test

Additional tests

What is established

The HRS recommendations and clinical reviews propose, as a first step, a clinical history, a physical examination with orthostatic vital signs and a 12-lead ECG. Beyond that, the documents differ: the CMAJ review proposes basic laboratory tests (hemoglobin, electrolytes, kidney function, ferritin, TSH, morning cortisol), whereas the 2015 HRS consensus reserves these tests for selected patients. ^{[5, 7, 2]}

Other tests may be considered depending on clinical findings:

Holter ECG / ambulatory monitoring: if an arrhythmia or inappropriate sinus tachycardia is suspected;
echocardiography: if the history or examination suggests a structural heart abnormality;
specialized autonomic tests: if the initial evaluation is not sufficient or if autonomic neuropathy is being considered;
other laboratory or endocrine tests: only when warranted by the clinical picture.

These tests are not a mandatory, identical battery for everyone; the CMAJ review specifies that autonomic tests are not recommended routinely. ^{[5, 2]}

Differential diagnoses and factors that can distort interpretation

What the test cannot establish

References and level of evidence

Raj SR, Guzman JC, Harvey P, et al. Canadian Cardiovascular Society Position Statement on Postural Orthostatic Tachycardia Syndrome (POTS) and Related Disorders of Chronic Orthostatic Intolerance. Canadian Journal of Cardiology, 36(3), 357–372 2020. DOI: 10.1016/j.cjca.2019.12.024. PMID: 32145864.(guideline or consensus)
Limitations: Summary and recommendations; some interventions rest on limited evidence. Population: Canadian position statement covering diagnosis and management. Read: abstract only.
Declared conflicts of interest: Not reviewed in the part of the source that was read
Raj SR, Fedorowski A, Sheldon RS. Diagnosis and management of postural orthostatic tachycardia syndrome. CMAJ, 194(10), E378–E385 2022. DOI: 10.1503/cmaj.211373. PMID: 35288409.(evidence synthesis)
Limitations: Narrative review, not a formal national guideline; protocol differences. Population: clinical review and practical recommendations. Read: full text (cmaj.ca).
Declared conflicts of interest: All three authors declare research funding, fees or consulting activities; Raj and Sheldon also declare expert witness work or patents
Haute Autorité de santé. Parcours de soins de l'adulte avec des symptômes prolongés de la Covid-19. HAS (French National Authority for Health), care pathway guide, approved April 11, 2024 2024.(guideline or consensus)
Limitations: Does not cover all POTS that is not post-COVID; post-COVID care pathway guide. Population: adults and adolescents aged 15 or older with prolonged post-COVID symptoms. Read: full text.
Declared conflicts of interest: The working group's public declarations of interest were reviewed by HAS and judged compatible
Thijs RD, Brignole M, Falup-Pecurariu C, et al. Recommendations for tilt table testing and other provocative cardiovascular autonomic tests in conditions that may cause transient loss of consciousness: Consensus statement of the European Federation of Autonomic Societies (EFAS) endorsed by the American Autonomic Society (AAS) and the European Academy of Neurology (EAN). Clinical Autonomic Research, 31(3), 369–384 2021. DOI: 10.1007/s10286-020-00738-6. PMID: 33740206.(guideline or consensus)
Limitations: Covers autonomic tests and loss of consciousness, not POTS exclusively. Population: EFAS consensus endorsed by the AAS and EAN. Read: full text (Leiden University repository).
Declared conflicts of interest: Several authors declare fees or industry funding outside the submitted work (Medtronic, UCB, Novo Nordisk, Boston Scientific…)
Sheldon RS, Grubb BP Jr, Olshansky B, et al. 2015 Heart Rhythm Society Expert Consensus Statement on the Diagnosis and Treatment of Postural Tachycardia Syndrome, Inappropriate Sinus Tachycardia, and Vasovagal Syncope. Heart Rhythm, 12(6), e41–e63 2015. DOI: 10.1016/j.hrthm.2015.03.029. PMID: 25980576.(guideline or consensus)
Limitations: 2015 recommendations; several areas rest on a low level of evidence. Population: international consensus of cardiovascular and autonomic societies. Read: full text (HRS PDF).
Declared conflicts of interest: Industry ties declared by several authors (appendix 1: Medtronic, Boston Scientific, St. Jude, Lundbeck, Biotronik…); NHLBI funding
Sivakoti K, Cortez MM, Fedorowski A, Fudim M, Lau DH, Novak P, Rowe PC, Schofield JR, Blitshteyn S, International POTS and Dysautonomia Expert Panel. Postural orthostatic tachycardia syndrome (POTS) and dysautonomia: International multidisciplinary expert consensus. The American Journal of Medicine, published online August 28, 2026 2026. DOI: 10.1016/j.amjmed.2026.08.012. PMID: 42665152.(guideline or consensus)
Limitations: Expert consensus, not a controlled trial or formal systematic review; full text not consulted. Population: international Delphi consensus; 31 statements, 40 contributors from 7 countries, adults and pediatrics. Read: PubMed abstract only.
Declared conflicts of interest: Not visible in the abstract consulted
Vernino S. et al. Postural orthostatic tachycardia syndrome (POTS): State of the science and clinical care from a 2019 National Institutes of Health Expert Consensus Meeting - Part 1. Autonomic Neuroscience, 235, 102828 2021. DOI: 10.1016/j.autneu.2021.102828. PMID: 34144933.(guideline or consensus)
Limitations: Expert consensus; heterogeneous pathophysiology; limited epidemiological data. Population: literature summary and NIH expert meeting; adults and pediatrics. Read: full text.
Declared conflicts of interest: Competing interests declared individually in the article (consulting, grants, patents).
Boris JR, Moak JP. Pediatric Postural Orthostatic Tachycardia Syndrome: Where We Stand. Pediatrics, 150(1), e2021054945 2022. DOI: 10.1542/peds.2021-054945. PMID: 35773520.(evidence synthesis)
Limitations: Narrative review; highlights gaps in pediatric thresholds and data. Population: pediatric clinical review. Read: full text (open access, Pediatrics).
Declared conflicts of interest: Not reviewed in the part of the source that was read
Chung TH, Raj SR. Postural Orthostatic Tachycardia Syndrome (POTS): A Review. JAMA, 336(13), 1149–1164 (online August 24, 2026) 2026. DOI: 10.1001/jama.2026.14809. PMID: 42635998.(evidence synthesis)
Limitations: The authors state that the quality of the evidence was not formally assessed; risk of referral bias from tertiary centers. Population: narrative review of the literature on POTS. Read: abstract + publisher excerpts; full text not checked.
Declared conflicts of interest: Chung: personal fees from Argenx and Regeneron outside the submitted work; Raj: fees/consulting, advisory board and grants declared outside the submitted work
Stewart JM, Medow MS. Can standing replace upright tilt table testing in the diagnosis of postural tachycardia syndrome (POTS) in the young?. Clinical Autonomic Research, 35(2), 257–266 2025. DOI: 10.1007/s10286-024-01080-x. PMID: 39592549.(observational study)
Limitations: Small sample, ROC criteria derived in this sample alone, active stand test of at least 5 minutes (most participants could not stand for 10 minutes). Population: comparison of 36 young people with POTS and 39 controls; 5-minute active stand test versus 5- and 10-minute tilt. Read: PubMed abstract only.
Declared conflicts of interest: Not reviewed in the part of the source that was read
Raj SR, Bourne KM, Stiles LE, et al. Postural orthostatic tachycardia syndrome (POTS): Priorities for POTS care and research from a 2019 National Institutes of Health Expert Consensus Meeting - Part 2. Autonomic Neuroscience, 235, 102836 2021. DOI: 10.1016/j.autneu.2021.102836. PMID: 34246578.(guideline or consensus)
Limitations: Not a cohort study; several measurement and research needs remain unresolved. Population: expert consensus and review of knowledge gaps. Read: abstract.
Declared conflicts of interest: Not reviewed in the part of the source that was read
Brignole M, Moya A, de Lange FJ, et al. 2018 ESC Guidelines for the diagnosis and management of syncope. European Heart Journal 2018. DOI: 10.1093/eurheartj/ehy037. PMID: 29562304.(guideline or consensus)
Limitations: Syncope guideline; POTS is covered secondarily (class IIa, level C). Full text read.

Written by: AI-assisted literature research (ChatGPT) and AI-assisted writing (Claude)
Editor: Jean Viry-Babel
Review status: Clinical review: Dr Françoise Charmoillaux (anesthesiologist)
Approved on: 9 November 2026
Literature search: 8 November 2026
Last verified: 8 November 2026
Geographic scope: international, United States, France, United Kingdom, Canada
Audience: everyone
Conflicts of interest: No known financial ties. Separately, the publisher is developing a personal approach to these conditions under the name Connected Conditions, which is not cited here (see the legal notice).
Limitations of this page: General overview of the tests described in the literature: it cannot be used to perform or interpret a test yourself. Several sources were read as abstracts only.

How is POTS evaluated: active stand test, tilt-table test and other tests?

Key points

What the evaluation aims to establish

General clinical criteria

Active stand test

Comparing protocols and the limits of interpretation

Tilt-table test

Additional tests

Differential diagnoses and factors that can distort interpretation

What the test cannot establish

Read next

References and level of evidence