1. Department of Clinical Biochemistry, Black Country Pathology Services Walsall Manor Hospital Walsall UK
2. The School of Medicine and Clinical Practice & Department of Biomedical Science and Physiology The University of Wolverhampton Wolverhampton UK
3. The School of Medicine and Manchester Academic Health Sciences Centre University of Manchester Manchester UK
4. Department of Clinical Biochemistry Bristol Royal Infirmary Bristol UK
5. School of Health and Life Sciences Aston University Birmingham UK
6. Birmingham Quality (UK NEQAS) University Hospitals NHS Foundation Trust Birmingham UK
7. Department of Endocrinology and Diabetes Salford Royal Hospital Manchester UK
8. Department of Clinical Biochemistry University Hospitals Birmingham NHS Foundation Trust Birmingham UK
9. Department of Clinical Biochemistry University Hospitals of North Midlands Stoke‐on‐Trent UK
10. Institute of Science and Technology Keele University Keele UK
11. Faculty of Health Sciences Staffordshire University Staffordshire UK
12. College of Engineering, Design and Physical Sciences Brunel University London London UK