JamesLactate vs pyruvate compares two closely linked products of glucose metabolism. Pyruvate is formed at the end of glycolysis and can enter mitochondrial energy pathways when conditions allow. Lactate is produced from pyruvate through lactate dehydrogenase, helping regenerate NAD⁺ so glycolysis can continue. Blood lactate is commonly measured in acute care, while pyruvate and the … Read more
A locum biomedical scientist is a qualified biomedical scientist working on a temporary basis, often through a recruitment agency, staff bank or fixed-term arrangement to cover vacancies, workload peaks or specialist staffing gaps. In the UK, the title Biomedical Scientist is legally protected, so locum status does not remove the requirement for HCPC registration. Locum … Read more
Lupus anticoagulant testing is a clotting-based laboratory investigation, not a test that diagnoses lupus. The name is confusing: lupus anticoagulants are antiphospholipid antibodies that can interfere with phospholipid-dependent clotting tests in the laboratory and are associated with antiphospholipid syndrome (APS) in the appropriate clinical setting. Testing may be considered after unexplained thrombosis, recurrent pregnancy loss … Read more
The neutrophil lymphocyte ratio (NLR) is calculated by dividing the absolute neutrophil count by the absolute lymphocyte count from a full blood count with differential. It is not usually a separate blood test. NLR is studied as a marker of systemic inflammation and physiological stress because neutrophils and lymphocytes can change in different directions during … Read more
Antimicrobial susceptibility testing (AST) is laboratory testing used to assess how a cultured microorganism responds to antimicrobial agents. After a clinically relevant bacterium or other organism is isolated, the laboratory may test selected drugs to help classify the organism as susceptible or resistant according to standard breakpoints. Common methods include disc diffusion and minimum inhibitory … Read more
MCV vs MCH compares two red blood cell indices reported as part of a full blood count. MCV, or mean cell volume, measures the average size of red blood cells. MCH, or mean cell haemoglobin, estimates the average amount of haemoglobin in each red blood cell. They are related but not interchangeable. Clinicians interpret them … Read more
TSH vs free T4 compares the pituitary signal that regulates the thyroid with one of the main thyroid hormones circulating in blood. TSH is produced by the pituitary gland and tells the thyroid how strongly to produce and release thyroid hormones. Free T4 measures the unbound fraction of thyroxine available to tissues. Doctors often interpret … Read more
The anion gap blood test is usually not a separate test requiring its own blood draw. It is a calculated value derived from electrolytes already measured in a blood sample, mainly sodium, chloride and bicarbonate. The calculation estimates the difference between selected positive and negative ions and can help clinicians assess acid–base balance, particularly when … Read more
The NHS Band 5 salary, NHS Band 6 salary and NHS Band 7 salary for 2026/27 in England are £32,073–£39,043, £39,959–£48,117 and £49,387–£56,515 respectively. These figures form part of the wider Agenda for Change pay structure, which also covers Bands 2–4 and Bands 8a–9. The 2026/27 rates are effective from 1 April 2026 and apply … Read more
A fibrinogen blood test measures fibrinogen, also called coagulation factor I, in a blood sample. Fibrinogen is made mainly by the liver and is converted into fibrin during clot formation. The test can be used when clinicians investigate unexplained bleeding, abnormal clotting tests, disseminated intravascular coagulation (DIC), major haemorrhage or selected pregnancy-related problems. High or … Read more