APHA Scientific > Services > Pathology and Bio-imaging > Pathology Control Blocks

Pathology Control Blocks

Our pathology control blocks support a range of validation, training and quality assurance applications.

Make an enquiry

AFB control blocks

Our pathology control blocks support a range of validation, training and quality assurance applications.

The primary wax blocks we supply support Ziehl Neelsen staining for the identification of acid fast bacilli (AFBs), such as Mycobacterium tuberculosis, in FFPE tissues. Each FFPE block is supplied with a pre-stained slide (cold Ziehl Neelsen method) demonstrating confirmed AFB presence.

These control blocks are used by histopathology laboratories, including NHS services, to support method validation, staff training, competency assessment, and ongoing quality control, particularly where suitable AFB-positive material is difficult to obtain.

Additional Control Materials

Our expertise and available material extends beyond AFB control material. We may be able to provide additional FFPE control blocks depending on specific requirements, including material to support specialised or less commonly available testing.

To discuss your requirements or request a quotation, please get in touch.

Enquire or request a quotation

Availability is limited and supply is subject to material being available.

Latest News

Keep up to date with the latest news and information from APHA Scientific

View all news

Meet APHA Scientific at EAVLD 2026

APHA Scientific will be attending the EAVLD 2026 Congress in Athens, connecting with veterinary diagnosticians and laboratory professionals from across Europe. Visit our team to learn more about our proficiency testing schemes, diagnostic reagents and quality assurance solutions for veterinary laboratories.

Read the article Read the article

World Buiatrics Congress 2026

The World Buiatrics Congress 2026 provides a global platform for sharing knowledge on cattle health and production. APHA Scientific will be showcasing products and expertise that support the diagnosis and control of important bovine diseases.

Read the article Read the article

Supporting laboratory validation with pathology control blocks

FFPE control materials are now available to support training, quality assurance and specialised laboratory testing.

Read the article Read the article

APHA Science in Partnership Conference

APHA Scientific will be attending the APHA Science in Partnership Conference in York this November. The event brings together stakeholders from across science, policy and industry to explore collaboration, innovation and shared challenges.

Read the article Read the article

New Salmonella Serotyping Antisera

Our Salmonella serotyping antisera portfolio is now available, supporting confirmation, serogrouping and flagellar characterisation in veterinary diagnostic laboratories.

Read the article Read the article

APHA Scientific to contribute expertise at chemical and biological risk management event

APHA will join the Star Ecotronics training event APHA, including a roundtable session for direct engagement with VETQAS customers.

Read the article Read the article

2026–2027 Biological Reagent Price List

New pricing for our biological reagents is now available, with updated costs applying from 1 April 2026.

Read the article Read the article

AHNTI EU 2026 in London

Meet our Business Development team at AHNTI EU 2026, where 850+ leaders are shaping the future of animal health.

Read the article Read the article