Laboratory practice at the periphery in developing countries

Area of Science:

• Clinical diagnostics
• Public health
• Laboratory medicine

Background:

• Effective national health services require comprehensive primary health care, particularly in rural and under-resourced areas with limited facilities and transport.
• Haematology plays a vital role in diagnosis and patient management, emphasizing test selection, clinical relevance, and technical reliability in peripheral settings.
• The World Health Organization (WHO) has outlined a tiered approach to essential diagnostic tests for various healthcare worker levels.

Purpose of the Study:

• To highlight the importance of haematology in primary healthcare, especially in resource-limited settings.
• To discuss the WHO's proposed framework for essential diagnostic tests and standardized laboratory practices.
• To introduce the Haemoglobin Colour Scale (HCS) as a tool for anaemia screening in areas where reliable diagnosis is challenging.

Main Methods:

• Review of WHO guidelines for essential haematology tests and laboratory services in peripheral health clinics.
• Discussion of training needs and quality assurance programs for standardized diagnostic methods.
• Introduction and validation of the Haemoglobin Colour Scale (HCS) for point-of-care haemoglobin measurement.

Main Results:

• WHO has categorized essential tests for different healthcare provider levels, from nurses to trained doctors.
• Standardized protocols for specimen handling, transport, and quality assurance are essential for reliable diagnostics.
• The Haemoglobin Colour Scale (HCS) provides a simple, portable, and accurate method for haemoglobin estimation, particularly valuable for anaemia screening in resource-limited environments.

Conclusions:

• Strengthening primary healthcare in peripheral and rural areas necessitates integrated haematology services and standardized testing protocols.
• The Haemoglobin Colour Scale (HCS) is a promising, cost-effective tool for addressing the high global burden of anaemia, especially in developing countries.
• A coordinated approach involving training, quality assurance, and accessible diagnostic tools is critical for improving health outcomes in under-resourced settings.