A

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Abdominal mass	Anaemia of renal disease
Abdominal pain	Analgesic abuse
Abortion	Analgesic nephropathy
Abscess	Anaphylactoid reaction
Acidosis	Anaphylaxis
Acquired immunodeficiency syndrome	Androgen deficiency
Acrocyanosis	Angioedema
Acromegaly	Ankylosing spondylitis
Actinomycosis	Anorexia nervosa
Acute leukaemia	Antenatal screening
Acute phase response	Anticoagulant monitoring
Addison's disease	Antiphospholipid syndrome
Adrenal medullary disorders	Anuria
Adrenocortical hyperfunction	Aplastic anaemia
Adrenocortical insufficiency	Apnoea - post-anaesthetic
Adverse drug reaction	ARC (AIDS related complex)
AIDS	Arrhythmias
Albuminuria	Artefactual result
Alcoholism	Arthritis
Alkalosis	Asbestosis
Alopecia	Ascites
Alzheimer's disease	Aspergillosis
Amenorrhoea	Asplenia
Aminoacidurias (genetic)	Asthma
Amoebiasis	Ataxia
Amyloidosis	Atherosclerosis: risk assessment
Anaemia	Autoimmune haemolysis
Anaemia of chronic disease