Test Index - A

A1AT     see alpha-1 antitrypsin
A-Beta 1-45 - CSF     see total tau and A-beta 1-42 (CSF)
ACA, aCL     see cardiolipin antibody
ACE (CSF)     see CSF ACE
ACR     see albumin (urine)
Acute kidney injury     see AKI
Adrenaline - urine     see catecholamines (urine)
Adrenocorticotrophin     see ACTH
Alanine transaminase     see ALT
Albumin (urine) (albumin:creatinine ratio, ACR, "microalbumin")
Alcohol, blood/urine     see ethanol (blood), methanol (blood)
Aldosterone including aldosterone/renin ratio
Alkaline phosphatase     see ALP
Alkaline phosphatase (placental)     see PLAP
Allergy testing     see specific IgE (allergy) tests
Alpha-1 acid glycoprotein (orosomucoid)     Test no longer routinely available. Suggest calprotectin (faeces) for investigation of ?IBD.
Alpha fetoprotein     see AFP
Alpha galactosidase     see Fabry screen
Amphiphysin antibody     see neuronal antibodies
Amylase (urine)     includes albumin/creatinine clearance ratio
Amyloid beta 1-42 (CSF)     see total Tau and A-Beta 1-42 (CSF)
Angiotensin-1-converting enzyme (ACE), CSF     see CSF ACE
Angiotensin-1-converting enzyme (ACE), serum     see ACE (serum)
Anti-GAD antibody     see GAD antibody
Anti-Müllerian Hormone     see AMH
Anti-neuronal antibodies     see neuronal antibodies
Anti-neutrophil cytoplasmic antibody     see ANCA
Anti-nuclear antibody     see ANA, dsDNA and ENA
Anti-phospholipase A2 receptor antibody (anti-PLA2R)     see phospholipase A2 receptor antibody
Anti-thyroid antibodies     see TPO antibody
Anti-thyroid receptor antibodies    see  thyroid receptor antibody (note this is a different test to TPO antibodies).
Anticonvulsant drugs     see individual drugs
Antithrombin activity     see thrombophilia screen
AP50, AP100    see CH100 and AP50
APC resistance     see thrombophilia screen
APTT ratio (activated partial thromboplastin time ratio)     see coagulation screen
Asialotransferrin (?CSF fluid)     see beta-2 transferrin (for ?CSF-containing fluids)
Aspartate aminotransferase see AST
Autoimmune testing: see Immunology
Avian precipitins     see Aspergillus & avian precipitins
Azathioprine metabolites     see 6-TGN and 6-MMPN