Tests in primary health care | Conditions with abnormal results | Tests in specialized care | Conditions with abnormal results |
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Full blood count | Blood dyscrasias (leukaemia Chronic Myelogenous Leukaemia (CML) Chronic Lymphocytic Leukaemia (CLL) lymphoma Lymphomas) | Faecal elastase 1 | Pancreatic exocrine insufficiency Pancreatic Insufficiency |
ESR, CRP | Colitis Ulcerative Colitis, ileitis, vasculitis Vasculitides, malignancy Colorectal Cancer | Faecal alpha-1-antitrypsin | Protein-losing enteropathy |
Na, K, Crea, serum cortisol | Addison's disease Addison's Disease and other Conditions Inducing Hypocortisolism, dehydration | Plasma gastrin | Zollinger-Ellison syndrome |
AST, ALT, ALP | Biliary tract obstruction, excessive alcohol consumption. See Assessing patients with abnormal liver function test results Assessing a Patient with an Abnormal Liver Function Test Result | Radiological bile acid absorption test | Bile acid malabsorption |
Blood glucose | Diabetes Type 1 Diabetes: Treatment Comprehensive Treatment and Follow-Up of Type 2 Diabetes, somatostatinoma Rare Endocrine Tumours | Plasma somatostatin | Somatostatinoma Rare Endocrine Tumours |
TSH, free T4 | Thyroid disorders Hypothyroidism Hyperthyroidism | Plasma chromogranin A | Neuroendocrine tumour Rare Endocrine Tumours |
Tissue transglutaminase antibodies | Coeliac disease Coeliac Disease | Plasma VIP | VIPoma Rare Endocrine Tumours |
Genetic test for lactose intolerance | Lactose intolerance Lactose Intolerance | 24-hour urine metanephrine and normetanephrine | Phaeochromocytoma Rare Endocrine Tumours |
Faecal calprotectin | Chronic inflammatory bowel disease Ulcerative Colitis Crohn's Disease | Plasma immunoglobulins | Hypo-/agammaglobulinaemia Susceptibility to Infections in Adults |
Faecal nucleic acid detection test (including Salmonella, Shigella, Yersinia, Campylobacter, and types of E. coli that cause diarrhoea) and, if possible, bacterial culture of positive findings | Bacterial gastroenteritis Acute Diarrhoeal Disease in a Traveller | Anti-enterocyte antibodies | Autoimmune enteropathy |
Clostridioides gene amplification test | Clostridioides infection Clostridioides Difficile Diarrhoea | | |
Faecal parasites (microscopy or nucleic acid detection test) | Parasitic infection Introduction to Intestinal Protozoal Diseases | | |
HIV antibodies | HIV infection HIV Infection | | |