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CNAE 8640-2/01 · Brazil

Laboratórios de anatomia patológica e citológica

1,593 active companies in the Brazilian CNPJ registry have this CNAE as their main activity. Look up companies and explore their distribution by state and city.

Source: Receita Federal, CNPJ Open Data · October 2026 publication

What this list shows

We count each active company in the Brazilian CNPJ registry once, by its head office and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.

Active companies
1,593
650th of 1,329 activities
Opened in 12 months
83
+6.4% · 732nd by openings
Of every 100 companies in the country
0.0
do this activity
Openings per 100 active
5
in the country: 21

Active companies in this activity

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation.

Look up companies in this activity (up to 300)

How to assess a company's data

When you open a company's record, use these guides to check the data and understand what each field can establish.

Where the companies are

Acre: 3 companies, 0.0 of every 100 active companies there Alagoas: 32 companies, 0.0 of every 100 active companies there Amapá: 4 companies, 0.0 of every 100 active companies there Amazonas: 17 companies, 0.0 of every 100 active companies there Bahia: 77 companies, 0.0 of every 100 active companies there Ceará: 49 companies, 0.0 of every 100 active companies there Distrito Federal: 26 companies, 0.0 of every 100 active companies there Espírito Santo: 31 companies, 0.0 of every 100 active companies there Goiás: 64 companies, 0.0 of every 100 active companies there Maranhão: 35 companies, 0.0 of every 100 active companies there Mato Grosso: 32 companies, 0.0 of every 100 active companies there Mato Grosso do Sul: 21 companies, 0.0 of every 100 active companies there Minas Gerais: 175 companies, 0.0 of every 100 active companies there Pará: 47 companies, 0.0 of every 100 active companies there Paraíba: 50 companies, 0.0 of every 100 active companies there Paraná: 86 companies, 0.0 of every 100 active companies there Pernambuco: 76 companies, 0.0 of every 100 active companies there Piauí: 37 companies, 0.0 of every 100 active companies there Rio de Janeiro: 129 companies, 0.0 of every 100 active companies there Rio Grande do Norte: 32 companies, 0.0 of every 100 active companies there Rio Grande do Sul: 107 companies, 0.0 of every 100 active companies there Rondônia: 17 companies, 0.0 of every 100 active companies there Roraima: 0 companies, 0.0 of every 100 active companies there Santa Catarina: 68 companies, 0.0 of every 100 active companies there São Paulo: 341 companies, 0.0 of every 100 active companies there Sergipe: 14 companies, 0.0 of every 100 active companies there Tocantins: 19 companies, 0.0 of every 100 active companies there

Weight in each federative unit: of every 100 active companies, how many have this main activity

  1. 0.0
  2. 0.0
  3. 0.0
  4. 0.0
  5. 0.0

Federative units with the most companies

  1. 1 São Paulo 341
  2. 2 Minas Gerais 175
  3. 3 Rio de Janeiro 129
  4. 4 Rio Grande do Sul 107
  5. 5 Paraná 86
  6. 6 Bahia 77
  7. 7 Pernambuco 76
  8. 8 Santa Catarina 68
  9. 9 Goiás 64
  10. 10 Paraíba 50
See the 26 federative units
  1. 11 Ceará 49
  2. 12 Pará 47
  3. 13 Piauí 37
  4. 14 Maranhão 35
  5. 15 Alagoas 32
  6. 16 Mato Grosso 32
  7. 17 Rio Grande do Norte 32
  8. 18 Espírito Santo 31
  9. 19 Distrito Federal 26
  10. 20 Mato Grosso do Sul 21
  11. 21 Tocantins 19
  12. 22 Amazonas 17
  13. 23 Rondônia 17
  14. 24 Sergipe 14
  15. 25 Amapá 4
  16. 26 Acre 3

Cities with the most companies

active companies by head office

  1. 1 São Paulo (SP) 145
  2. 2 Rio de Janeiro (RJ) 67
  3. 3 Belo Horizonte (MG) 49
  4. 4 Curitiba (PR) 30
  5. 5 Fortaleza (CE) 28
  6. 6 Recife (PE) 27
  7. 7 Porto Alegre (RS) 27
  8. 8 Brasília (DF) 26
  9. 9 Goiânia (GO) 25
  10. 10 Campinas (SP) 23
See the 30 cities
  1. 11 Salvador (BA) 21
  2. 12 Belém (PA) 18
  3. 13 Teresina (PI) 18
  4. 14 Maceió (AL) 17
  5. 15 João Pessoa (PB) 16
  6. 16 Natal (RN) 14
  7. 17 Montes Claros (MG) 14
  8. 18 Vitória (ES) 13
  9. 19 Sorocaba (SP) 13
  10. 20 Londrina (PR) 12
  11. 21 Caxias do Sul (RS) 12
  12. 22 Cuiabá (MT) 12
  13. 23 São Luís (MA) 11
  14. 24 Feira de Santana (BA) 11
  15. 25 Ribeirão Preto (SP) 11
  16. 26 Campo Grande (MS) 11
  17. 27 Florianópolis (SC) 10
  18. 28 Passo Fundo (RS) 10
  19. 29 Uberlândia (MG) 9
  20. 30 Manaus (AM) 8

What activity 8640-2/01 is

  1. Section Q — Saúde humana e serviços sociais
  2. Division — Atividades de atenção à saúde humana
  3. Group — Atividades de serviços de complementação diagnóstica e terapêutica
  4. Class — Atividades de serviços de complementação diagnóstica e terapêutica

What it covers

  • As atividades dos laboratórios de anatomia patológica e citológica, tais como: #- exames citológicos #- exames citopatológicos #- exames histopatológicos

What it does not cover

Typical activities

  • Atividade de autopsias
  • Atividades de apoio à medicina legal
  • Exame de peças biológicas
  • Laboratório de anatomia citológica
  • Laboratório de anatomia patológica
  • Laboratório de anatomia patológica e citológica
  • Serviços de biologia molecular, sequenciamento de dna
  • Serviços de teste de dna para determinação de paternidade
  • Serviços de teste de paternidade
  • Serviços de testes e mapeamentos genéticos

Source: IBGE, CNAE 2.3 and its explanatory notes

The activities of class 8640-2

atividades de serviços de complementação diagnóstica e terapêutica, by subclass
SubclassActiveOpeningsChange
8640-2/01 Laboratórios de anatomia patológica e citológica · this one1,59383+6.4%
8640-2/02 Laboratórios clínicos13,924940+12.0%
8640-2/03 Serviços de diálise e nefrologia1,08651−17.7%
8640-2/04 Serviços de tomografia1,802153+22.4%
8640-2/05 Serviços de diagnóstico por imagem com uso de radiação ionizante, exceto tomografia9,757829−1.4%
8640-2/06 Serviços de ressonância magnética841121+72.9%
8640-2/07 Serviços de diagnóstico por imagem sem uso de radiação ionizante, exceto ressonância magnética4,832380+1.9%
8640-2/08 Serviços de diagnóstico por registro gráfico - ecg, eeg e outros exames análogos1,03185+9.0%
8640-2/09 Serviços de diagnóstico por métodos ópticos - endoscopia e outros exames análogos1,27484+35.5%
8640-2/10 Serviços de quimioterapia41024—
8640-2/11 Serviços de radioterapia43052+30.0%
8640-2/12 Serviços de hemoterapia20820—
8640-2/13 Serviços de litotripcia372—
8640-2/14 Serviços de bancos de células e tecidos humanos497—
8640-2/99 Atividades de serviços de complementação diagnóstica e terapêutica não especificadas anteriormente3,328200−11.1%

Frequently asked questions about CNAE 8640-2/01

How many CNAE 8640-2/01 companies are there in Brazil?

1,593 active companies have CNAE 8640-2/01 as their main activity, according to the Receita Federal's October 2026 publication. It is 650th among the country's activities by companies.

Which activities make up class 8640-2?

Class 8640-2 has 15 subclasses: 8640-2/01; 8640-2/02; 8640-2/03; 8640-2/04; 8640-2/05; 8640-2/06; 8640-2/07; 8640-2/08; 8640-2/09; 8640-2/10; 8640-2/11; 8640-2/12; 8640-2/13; 8640-2/14; 8640-2/99. The official names are in the subclass table. A company declares one main activity and may declare others as secondary activities.

Which federative unit has the most companies in this activity?

São Paulo, with 341. There, 0.0 of every 100 active companies have this main activity, against 0.0 in the national registry.

Does this total include branches and secondary activities?

No. Each active company is counted once, by its head office and registered main activity. A company may carry out this activity as a secondary activity and be excluded from the count. Geographic distribution uses the registered location; records without a recognized federative unit may be counted nationally without appearing in local groups.

Does active status mean a company is qualified for a contract?

No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.

How we count

Active companies in the Brazilian CNPJ registry with this as their main activity, counted once by head office. Location is taken from the registry. Where available, openings are for the last 12 months, compared with the previous 12 months.

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