Welzo Spare Components - Gold and Purple Cap

The Welzo Spare Components – Gold and Purple Cap kit offers essential replacement parts for blood sample collection, ensuring accuracy, hygiene, and compliance with medical-grade standards. These specialised vacutainer tubes are crucial for maintaining sample integrity in home and clinical testing environments. Whether you're replacing components from an existing kit or preparing for additional tests, these colour-coded caps follow strict laboratory protocols to ensure precise and reliable diagnostic results.

The gold cap tube, also known as a serum separator tube (SST), contains a clot activator and gel that separates serum from blood cells. It is commonly used in biochemistry profiles to analyse hormones, vitamins, liver enzymes, and other vital biomarkers. Research from the University of Oxford and clinical guidelines from the NHS Pathology Handbook confirm that SST tubes are essential for tests requiring clean serum separation, particularly in vitamin D, thyroid function, and hormone assessments.

The purple cap tube contains EDTA, an anticoagulant used to preserve whole blood. It is primarily used for haematology testing, including full blood counts, blood typing, and certain genetic or infectious disease screening. According to guidance published by the Royal College of Pathologists, EDTA tubes are critical for maintaining blood cell morphology and preventing clotting during transport, enabling accurate cell analysis and DNA testing. These tubes are used in a wide range of medical diagnostics, from identifying anaemia and infections to investigating chronic fatigue and immune disorders.

What Does It Test For?

The Welzo Gold and Purple Cap tubes support a wide spectrum of diagnostic testing. The gold cap enables serum-based tests that assess biochemical health markers such as vitamin and hormone levels, liver and kidney function, metabolic panels, and cardiovascular risk indicators. These are frequently used in wellness, fertility, and hormonal assessments, which research from Imperial College London has shown to be vital in identifying early signs of chronic disease or hormonal imbalance.

The purple cap supports whole blood analysis, commonly used in full blood count (FBC) tests, which are essential for detecting anaemia, infection, inflammation, and blood cell abnormalities. Studies from the University of Manchester highlight the importance of haematological screening in diagnosing systemic conditions and monitoring overall health status. The EDTA within the purple tube ensures the sample remains viable for accurate cellular and genetic testing.

Together, these components form the foundation of reliable laboratory diagnostics, empowering patients and healthcare professionals to track health markers with clinical precision.