Diagnostic Accreditation — the article + the world, ranked

A fuller editorial guide to diagnostic accreditation is coming soon. For now, the ranking below compares every country we have assessed on it — open a country's report for the cited detail behind its score.

The country comparison

Which countries are best for diagnostic accreditation

The destinations ranked high→low under this lens — each with the reasoning behind its score, the cited evidence one click down, and its full report. The verdict is free; the report is the depth.

19 / 19 Countries ranked

Researched and assessed by the Epidaurus editorial pipeline against our published scale. A country below the rule is not yet assessed enough — never ranked last.

1 United Arab Emirates AE 5.0/5 Good The UAE operates a mandatory diagnostic accreditation system with nearly 100% compliance among DHA/DOH-licensed facilities, backed by comprehensive national standards from Dubai Health Authority, Abu Dhabi Department ... Full report
The evidence behind this score 5 cited points
- DHA and DOH mandate accreditation for all licensed clinical laboratories from approved bodies (EIAC, CAP, JCI), making UAE one of very few countries with mandatory laboratory accreditation
- National Reference Laboratory alone holds 28 international accreditations across 12 facilities, and 10+ distinct CAP-accredited laboratories operate in UAE (American Hospital Dubai, Cleveland Clinic Abu Dhabi, Al Jalila, Sheikh Khalifa, IGENOMIX, RAK Hospital, Dubai Health, 4baseCare)
- EIAC is ILAC MRA signatory, meaning all EIAC-accredited laboratory results carry automatic acceptance in all 104 ILAC signatory economies
- Mandatory quality management systems aligned to ISO 15189:2022, with proficiency testing required under DHA/DOH/CAP/JCI frameworks and documented enforcement through DHA inspections, CAP biennial audits, and JCI triennial surveys
- Abu Dhabi DOH issued dedicated Standard for Medical Tourism (March 2025) ensuring international patients receive same accreditation standards as residents, coupled with multilingual services and 5,000+ test menu availability
Read the full United Arab Emirates report →
2 Germany DE 5.0/5 Good Germany operates a comprehensive, mandatory diagnostic accreditation system with no international comparables. The Deutsche Akkreditierungsstelle (DAkkS) maintains approximately 450 ISO 15189-accredited laboratories (... Full report
The evidence behind this score 5 cited points
- 450 DAkkS ISO 15189-accredited medical laboratories with essentially universal adoption among private-practice labs; all transitioned to DIN EN ISO 15189:2024 by August 2025 without lapse [Medical laboratory diagnostics in Germany – a status report 2024 - PMC/GMS - 2024]
- At least 4 CAP-accredited facilities across diverse disciplines: MLM Medical Labs Mönchengladbach (since 2014), MLL Dx Munich (since 2021), Arcensus Rostock (2024), Indivumed Hamburg (2023) [MLM Medical Labs Germany Receives 6th Consecutive CAP Accreditation - MLM Labs - 2024]
- RiliBÄK mandatory for ALL clinical laboratories in Germany; requires internal quality control and external proficiency ring trials at least every 6 months [Quality assurance in Germany: Guideline of the German Medical Association - Springer Nature - 2018]
- DAkkS is ILAC MRA and EA MLA signatory providing multilateral recognition agreement coverage across 100+ countries; publicly searchable real-time accreditation registry provides complete transparency [Accredited Bodies Search - DAkkS - 2025]
- Multiple enforcement channels including 1,370 Kassenärztliche Vereinigungen (KV) compliance inspections in 2022, state regulatory oversight under Medical Devices Operator Ordinance, and DAkkS surveillance assessments [Medical laboratory diagnostics in Germany – a status report 2024 - PMC/GMS - 2024]
Read the full Germany report →
3 United States US 5.0/5 Good The United States operates the world's most comprehensive diagnostic accreditation system, combining universal mandatory CLIA certification for all laboratories with a mature ecosystem of voluntary accreditation progr... Full report
The evidence behind this score 7 cited points
- CLIA requires federal certification for all ~318,000+ human specimen testing facilities; ~15,894 hold more rigorous Certificate of Accreditation distributed across CMS-approved organizations
- CAP accredits 8,350 laboratories globally (record 2024 with 657 new labs), majority in US, using biennial unannounced peer-inspection model with 3,000+ checklist requirements
- ~85 laboratories hold CAP ISO 15189 international accreditation, including ARUP Laboratories, LabCorp, Quest Diagnostics, and Mayo Clinic Health System
- ACR accredits 37,000+ imaging entities nationally; MQSA mandates federal accreditation for all mammography facilities with annual FDA-authorized inspections
- Mandatory proficiency testing for all non-waived CLIA laboratories; December 2024 CLIA final rule updated personnel requirements for first time in 30+ years
- Enforcement mechanisms include CMS certificate revocation, civil money penalties up to $10,000 per day per deficiency, automatic one-year minimum PT referral sanctions, and public CMS registry of excluded/revoked labs
- HL7 FHIR standards for diagnostic result reporting; major reference laboratories explicitly serve international clients with results accepted by healthcare systems worldwide
Read the full United States report →
4 Singapore SG 4.5/5 Good Singapore operates an exceptionally strong diagnostic accreditation system meeting or exceeding most Score 5 criteria. SAC-SINGLAS (operating since 1986) provides comprehensive framework standards, mandatory HCSA lice... Full report
The evidence behind this score 6 cited points
- SAC-SINGLAS operating since 1986 with all clinical laboratories subject to mandatory HCSA licensing; four-year accreditation cycle includes annual surveillance and biennial full technical reassessments
- 7+ named CAP-accredited laboratories including Singapore General Hospital (since 2003), Raffles Diagnostica, Parkway Laboratory Services, IQVIA, NeoGenomics, Innoquest Diagnostics, and ACM Global Laboratories
- 23 JCI-accredited healthcare facilities in Singapore, with laboratory services in all major hospital clusters (Mount Elizabeth, Gleneagles, Parkway East, all NHG institutions)
- NHG Diagnostics operates 20+ imaging centers and laboratories all accredited to ISO 15189 standard
- SAC-accredited diagnostic reports recognized in 121 economies through ILAC MRA and APAC MRA partnerships, enabling cross-border result portability
- Mandatory ISO 15189:2022 quality management systems including proficiency testing (SAC PROF 001 policy), internal quality control, measurement uncertainty, and corrective action requirements
Read the full Singapore report →
5 Spain ES 4.5/5 Good Spain operates an established diagnostic accreditation system anchored by ENAC, achieving 85 ISO 15189-accredited laboratories and 20+ JCI-accredited hospitals—numbers exceeding Score 5 thresholds. However, the volunt... Full report
The evidence behind this score 5 cited points
- ENAC is Spain's sole government-designated accreditation body under EU Regulation 765/2008; maintains publicly searchable directory of accredited laboratories
- Approximately 85 laboratories hold ISO 15189 certification as of 2023, far exceeding the 10+ threshold for Score 5; 20+ JCI-accredited hospitals with full diagnostic services
- Regular ENAC surveillance every 12-18 months and full re-assessment every 4 years; AEMPS oversight of IVD products; UTPR certificates for radiology facilities
- SEQCML operates 29 external quality assessment programs covering ~700 laboratories; 90% of labs have >60% automation; ILAC MRA membership ensures recognition in 90+ countries
- Main limitations: ISO 15189 accreditation is voluntary rather than mandatory; only 18% of labs have ISO 15189, 49% have ISO 9001, and 26% have no quality management system; no dedicated national imaging center accreditation program
Read the full Spain report →
6 United Kingdom GB 4.5/5 Good The UK operates a world-class diagnostic accreditation system anchored by UKAS and ISO 15189, with approximately 550 accredited laboratories achieving ILAC MRA recognition in 80+ countries and comprehensive quality ma... Full report
The evidence behind this score 5 cited points
- UKAS accredits ~550 medical laboratories to ISO 15189 standard, with ILAC MRA membership ensuring recognition in 80+ countries; 50%+ had completed transition to ISO 15189:2022 by May 2025
- UK NEQAS provides comprehensive EQA across all laboratory disciplines with 50+ years of operation; GenQA operates 120+ genomics-specific EQAs
- Annual UKAS surveillance and 4-year full reassessments; CQC regulatory oversight; escalating enforcement (corrective actions → suspension → withdrawal); public searchable directory provides transparency
- Zero JCI or CAP-accredited facilities (explained as unnecessary due to superior domestic system); imaging accreditation transitioned from UKAS to RCR/CoR in July 2024 with only 47 previously holding BS 70000 designation
- Private sector (HCA UK, Synnovis, Phoenix Pathology) serves international patients with UKAS accreditation and English reporting, but no specific accreditation standards mandate international patient accommodations
Read the full United Kingdom report →
7 Turkey TR 4.0/5 Good Turkey has an established comprehensive national accreditation system through TÜRKAK with mandatory ISO 15189 standards for all diagnostic laboratories as of 2023, and over 50 JCI-accredited hospitals positioning it a... Full report
The evidence behind this score 7 cited points
- TÜRKAK serves as the sole national accreditation body with mandatory ISO 15189 standards for all diagnostic laboratories as of 2023
- Over 50 JCI-accredited hospitals, ranking Turkey second globally in JCI certifications
- TÜRKAK is a full member of ILAC, IAF, and EA with mutual recognition agreements providing international validity
- Robust enforcement mechanisms with clear penalties for non-compliance including suspension and license cancellation
- Mandatory external quality control and proficiency testing requirements as of 2025 regulation
- Named internationally accredited laboratories include Acíbadem Labmed, Synevo, British Medical Laboratory (ISO 15189), and Acíbadem Labgen (CAP)
- Absence of dedicated national imaging center accreditation program; imaging quality governed primarily through hospital-level accreditation
Read the full Turkey report →
8 Israel IL 4.0/5 Good Israel maintains an established national diagnostic accreditation system with exceptional mandatory JCI accreditation covering all 29 general hospitals, paired with ISRAC's ILAC-MRA signatory status providing strong i... Full report
The evidence behind this score 4 cited points
- Mandatory JCI accreditation for all 29 general hospitals with 3-year re-evaluation cycle; ISRAC is full ILAC-MRA signatory providing mutual recognition across 100+ countries
- Only 3 facilities with ISO 15189 accreditation (Sheba mega-lab, Sheba IVF Institute, AML Israel private lab); ISO 15189 is voluntary not mandatory for private laboratories
- National Program for Quality Indicators in Hospitals (65 indicators since 2012) with public reporting; annual Ministry of Health licensing of radiation-emitting imaging equipment
- Strong medical tourism infrastructure with English-language diagnostic reporting at major centers, international patient departments, and ranking 3rd globally in Medical Tourism Index quality of facilities
Read the full Israel report →
9 South Korea KR 4.0/5 Good South Korea demonstrates a well-established and comprehensive diagnostic accreditation system with strong government oversight and international recognition. KOLAS provides ISO 15189 laboratory accreditation with ILAC... Full report
The evidence behind this score 5 cited points
- KOLAS signed ILAC MRA for medical testing in December 2016, providing international mutual recognition across 80+ countries
- All mammography, CT, and MRI units undergo mandatory annual inspection by KIAMI with 87-88% compliance rate and government enforcement banning non-compliant equipment
- 29 JCI-accredited hospitals exceed the criteria for international hospital accreditation
- KEQAS operates 70 external quality assessment programs (expanded from 46 in 2016) with mandatory proficiency testing requirement for KOLAS accreditation
- Medical tourism-specific protections including KAHF (Korean Accreditation Program for Hospitals Serving Foreign Patients) and government registration system since 2009
Read the full South Korea report →
10 Mexico MX 4.0/5 Good Mexico has an established national accreditation system through EMA (founded 1999) with 85 ISO 15189-accredited laboratories and multiple facilities holding CAP and JCI accreditation. The system demonstrates robust qu... Full report
The evidence behind this score 5 cited points
- EMA established 1999 and recognized by IAF, ILAC, APAC, IAAC as Mexico's primary accreditation body
- 85 ISO 15189-accredited clinical laboratories and 4 blood banks as of 2015, representing Latin America's most developed market for ISO 15189 accreditation
- Multiple facilities with international accreditation: Quest Diagnostics CAP-accredited laboratories in Mexico City and Ciudad Juarez, Hospital Médica Sur with CAP accreditation, and 8 JCI-accredited hospitals
- Comprehensive quality management requirements including mandatory proficiency testing through 5 accredited proficiency testing programs
- COFEPRIS conducts regular health surveillance inspections and facility audits to ensure compliance with GLP and GMP standards
Read the full Mexico report →
11 Malaysia MY 4.0/5 Good Malaysia operates a mature national diagnostic accreditation system (SAMM) administered by JSM, with 121+ facilities holding ISO 15189 accreditation across government and private sectors. The system features robust en... Full report
The evidence behind this score 6 cited points
- 83 laboratories hold SAMM MT accreditation using MS ISO 15189:2022; 38 additional MOH hospital laboratories have ISO 15189 accreditation — totaling 121+ accredited diagnostic facilities
- JSM e-Accreditation 2.0 portal provides public searchable access to accreditation status enabling patient verification
- Mandatory proficiency testing participation required for SAMM accreditation; surveillance inspections conducted annually for first two years then biannually
- Premier Integrated Labs holds quadruple accreditation (CAP, MS ISO 15189, MSQH, JCI) across 13+ branches; represents the only laboratory network in Malaysia with all four certifications
- SAMM is signatory to ILAC/APAC Mutual Recognition Arrangement, ensuring SAMM-endorsed reports are accepted across 100+ ILAC member economies
- Flagship Medical Tourism Hospital Programme explicitly identifies JCI accreditation as cornerstone international standard; multiple JCI-accredited hospitals identified (Island Hospital Penang, Sunway Medical Centre, Mahkota Medical Centre, SJMC)
Read the full Malaysia report →
12 Thailand TH 4.0/5 Good Thailand maintains an established national accreditation system with BLQS-DMSc as the governing body, achieving strong international integration through ILAC and APLAC membership. The country demonstrates excellent ad... Full report
The evidence behind this score 7 cited points
- BLQS-DMSc holds full membership and signatory status to ILAC MRA and APLAC MRA, demonstrating international recognition
- Thailand has 65 JCI-accredited medical facilities, the fourth largest number globally
- Siriraj Hospital achieved CAP Laboratory Accreditation as Thailand's first teaching hospital; Genetrack holds AABB, CAP, CLIA, SCC, and ISO/IEC 17025
- Multiple facilities documented with ISO 15189 accreditation including THAI StemLife, Prime Fertility Center, and Bangkok Medical Laboratory
- Faculty of Medical Technology operates EQAS since 1985 with nearly 3,000 participating laboratories, ensuring comprehensive proficiency testing
- BLQS grants accreditation complying with ISO/IEC 17025, ISO 15189, ISO 15190, ISO 22870, and ISO 17034
- MOPH X-ray 2562 certification system established in 2019 for diagnostic radiology with 245 certified facilities
Read the full Thailand report →
13 Brazil BR 4.0/5 Good Brazil operates an established national accreditation system with mandatory ANVISA requirements (RDC 978/2025) covering all ~17,000 clinical laboratories, complemented by mature voluntary programs including PALC (2,40... Full report
The evidence behind this score 9 cited points
- ANVISA RDC 978/2025 establishes mandatory quality requirements for all ~17,000 Brazilian clinical laboratories
- PALC covers 2,402 service points across 23 states responsible for ~47% of all national clinical tests (2023)
- 4+ major CAP-accredited laboratories: Hospital Israelita Albert Einstein (CAP 2009), Fleury Diagnósticos (CAP since 2007), DASA, Mendelics (CAP since 2017)
- Brazil leads Latin America with ~25 JCI-accredited hospitals (2023); new JCI Laboratory Accreditation Program launched January 2024
- CGCRE/ISO 15189 accreditation available; CGCRE signatory to ILAC and IAAC mutual recognition arrangements
- CBR awarded 280+ quality seals to imaging centers with mandatory 3-year recertification cycles covering 5 modalities
- PNCQ operates 63 external quality assessment schemes covering 352 tests with 5,028 participating laboratories and 3.5 million results analyzed annually
- Regular inspection cycles: ANVISA with licensing revocation authority, PALC on-site audits, CAP 2-year inspection cycle; public CGCRE accreditation database
- Only 3.8% of all Brazilian clinical laboratories hold accreditation beyond mandatory licensing; geographic concentration in major southern cities limits nationwide access
Read the full Brazil report →
14 Japan JP 4.0/5 Good Japan demonstrates a mature, multi-tiered diagnostic accreditation ecosystem combining mandatory statutory oversight, voluntary ISO 15189 certification (70+ laboratories), extensive CAP accreditation (30+ labs), and J... Full report
The evidence behind this score 6 cited points
- JAB administers ISO 15189 since 2005; 70+ laboratories hold certification; JCCLS provides external quality assessment
- 30+ laboratories hold CAP accreditation; National Cancer Center Hospital East is first/only full hospital laboratory with CAP certification in Japan
- Five major hospitals hold JCI accreditation (NTT Medical Center Tokyo, St. Luke's, Saitama Medical University, Nagoya University, Fujita Health); JCI launched Laboratory Accreditation Programme in January 2024
- 2,198 hospitals (~24% of ~9,000) hold JCQHC accreditation with mandatory laboratory quality evaluation component; JCQHC recognized by ISQua
- JMIP scheme certifies 69 institutions with multilingual diagnostics and international patient services; National Center for Global Health and Medicine holds ISO 15189 with 198 N1-level medical interpreters
- Demonstrated enforcement: JAB cancelled LSI Medience Central Laboratory's ISO 15189 accreditation in June 2024 for quality management deficiencies; prefectural governors hold statutory inspection and registration suspension authority
Read the full Japan report →
15 India IN 3.5/5 Moderate India has an established national accreditation system (NABL) covering most diagnostic services with mandatory external quality assessment requirements and strong international recognition through ILAC/APAC partnershi... Full report
The evidence behind this score 4 cited points
- NABL is an established national accreditation body covering 11+ diagnostic disciplines with mandatory participation in External Quality Assessment Schemes (EQAS)
- At least 6 facilities hold CAP accreditation (IQVIA, MedGenome, ICON Bangalore, CORE Diagnostics, Kokilaben, Suburban Diagnostics), exceeding Score 4's 5–9 minimum
- NABL is an MRA signatory to ILAC and APAC, enabling international recognition of diagnostic results and cross-border acceptance
- Accreditation is voluntary rather than mandatory, and percentage of medical diagnostic facilities holding accreditation is not documented, suggesting coverage likely below 60–79%
Read the full India report →
16 Jordan JO 3.5/5 Moderate Jordan maintains a dual-track national accreditation system (JAS-AU and HCAC) with multiple internationally recognized certifications among elite private facilities—including MedLabs, Biolab, and KHCC with CAP and JCI... Full report
The evidence behind this score 3 cited points
- JAS-AU maintains 9 active ISO 15189-accredited laboratories with ILAC MRA recognition; HCAC has accredited ~70 medical laboratories, 21 hospitals, and 16 breast imaging units
- MedLabs and Biolab hold multiple international certifications (CAP + ISO 15189); KHCC holds CAP + JCI; at least 7 hospitals are JCI-accredited
- No national EQA scheme exists; accreditation is voluntary, not mandatory; 2025 study confirmed no laboratory in Jordan has complete ISO-aligned QMS; weak enforcement for majority of non-accredited labs
Read the full Jordan report →
17 Colombia CO 3.5/5 Moderate Colombia operates a comprehensive mandatory accreditation framework (SOGC/habilitación) with robust enforcement and public transparency, exceeding Score 3 standards. However, voluntary high-level accreditation penetra... Full report
The evidence behind this score 5 cited points
- 6-7 JCI-accredited hospitals including Fundación Santa Fe de Bogotá, Hospital Pablo Tobón Uribe, and Clínica Imbanaco, all with comprehensive diagnostic laboratories and imaging suites
- Only 3 ONAC ISO 15189 accredited laboratories: IDIME, Pasteur Laboratorios Clínicos de Colombia, and Laboratorios Nancy Flórez García—significantly below Score 4's 5-9 range
- ONAC is an ILAC MRA signatory providing mutual recognition of laboratory results in 100+ countries
- Mandatory habilitación system under Resolution 3100/2019 covers all diagnostic facilities with departmental verification and National Health Superintendence oversight
- Report identifies limited penetration of voluntary accreditation beyond basic licensing: approximately 61 ICONTEC SUA institutions out of thousands of REPS-registered facilities, creating a significant gap between internationally accredited top-tier facilities and minimally-licensed community labs
Read the full Colombia report →
18 Hungary HU 3.5/5 Moderate Hungary operates an exceptional mandatory ISO 15189 laboratory accreditation system covering all clinical laboratories nationwide—one of only two EU member states to enforce this requirement universally. With 8+ ISO 1... Full report
The evidence behind this score 4 cited points
- Hungary mandates ISO 15189 accreditation for all medical laboratories across all fields—one of only two EU countries (France) requiring this nationally
- SYNLAB Hungary holds NAH-recognized ISO 15189 accreditation across 8 laboratories; Semmelweis University holds ISO 15189:2023 accreditation
- QualiCont provides proficiency testing as EQALM member with NAH accreditation (NAH-8-0002/2023); Hungary achieved 'very good' concordance in EARS-Net 2023 external quality assessment
- No currently active JCI-accredited hospital or diagnostic facility in Hungary appears in the JCI's published directory
Read the full Hungary report →
19 Poland PL 3.0/5 Moderate Poland operates a developing diagnostic accreditation system with recent regulatory upgrades, but actual facility accreditation remains limited. The 2022 Laboratory Medicine Act and July 2025 quality standards regulat... Full report
The evidence behind this score 5 cited points
- July 2025 ministerial regulation mandated minimum quality standards aligned with ISO 15189 principles for all diagnostic laboratories with six-month transition period
- 2,594 medical laboratories registered with KIDL but only a subset hold PCA/ISO 15189 accreditation—majority operate under basic licensing rather than formal international accreditation
- Confirmed international accreditations: LuxMed Hospital (JCI institutional), INVICTA (PCA/ISO 15189 AM 007), 3 histocompatibility labs (EFI)—no Polish CAP-accredited labs
- Robust enforcement mechanisms including KIDL disciplinary authority, NFZ-administered hospital authorization from 2024, KCOR 48-facility imaging quality control network
- No dedicated accreditation tier or requirements specifically for facilities serving international patients; quality assurance relies on voluntary pursuit of international certifications
Read the full Poland report →

See the full ranking, the 1–5 rubric and the reports →