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C-Peptide
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C-reactive protein (CRP)
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C-terminal telopeptide of type I collagen
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C1 esterase inhibitor (Quantitation and functional assays)
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C1Q (Quantitation)
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C3 Nephritic Factor
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Caeruloplasmin
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Calcitonin
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Calcium
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Calprotectin
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Calreticulin mutation
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Cancer antigen 125
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Cancer antigen 15.3
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Cancer antigen 19.9
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Candida species PCR
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Candida species serology
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Capillary blood gas
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Carbamazepine
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Carbapenamase PCR
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Carbepenemases - see multi resistant Gram negative bacilli screens
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Carbohydrate Deficient Transferrin
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Carcinoembryonic antigen (CEA)
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Cardiac Muscle antibody
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Cardiolipin Antibody
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Carnitine
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Carrión's disease - see Bartonella PCR
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Cat scratch fever - see Bartonella
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Catecholamines (paediatrics)
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CCP (Cyclic Citrullinated Protein) antibody
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CD34 (Stem Cell Count)
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CD4/CD3/CD8+ Count (Immune Monitoring)
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Cell markers (ascitic or pleural fluid)
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Cell markers (blood and bone marrow)
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Cell markers (CSF)
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Cellulitis - see Swabs - skin, superficial wounds
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Cervical swab
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CFT respiratory virus summer screen
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CFT respiratory virus winter screen
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Chicken pox - see varicella zoster
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Chikungunya virus
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Chitotriosidase
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Chlamydia group antibody CFT
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Chlamydia nucleic acid (female samples)
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Chlamydia nucleic acid (male samples)
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Chlamydia nucleic acid (trachoma)
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Chloride
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Cholinesterase Activity/Phenotyping
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Cholinesterase Genotyping
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Chromium
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Chromogranin A
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Chromosomal Analysis
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Chromosomal analysis (Haematology)
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Citrated Platelet Count
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Clostridioides difficile (previously Clostridium difficile) see faeces-Clostridioides difficile
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Clozapine
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Coaguchek devices
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Cobalt
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Colistin assay (pre dose only)
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Collagen / ADP
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Collagen / Epinephrine
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Conjugated bilirubin
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Conjuncitval/eye samples
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Contact lens/case - see Acanathamoeba culture
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Copper (blood)
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Copper (urine)
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Cord investigation
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Corneal scrape (see Acanthamoeba also)
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Cortisol
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Coxiella burnetti (Q fever)
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Coxiella burnetti (Q fever) PCR
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Coxsackie virus (Enterovirus, hand foot and mouth disease)
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Coxsackie virus PCR (Enterovirus, hand foot and mouth disease)
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Creatine Kinase
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Creatinine
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Creatinine clearance
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Crossmatch
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Cryoglobulins
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Cryptococcus antigen (CSF)
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Cryptococcus serology
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Crystals (Joint Fluid)
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Crytptococcus antigen
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CSF (cerebrospinal fluid)
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CSF FilmArray (multiplex PCR, bacterial, viral and fungal targets)
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CSF Hypocretin
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CSF reservoir
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CSF shunts
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Cycloserine assay
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Cyclosporin
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Cysticercosis serology
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Cytomegalovirus (CMV) DNA (urine)
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Cytomegalovirus (CMV) IgG
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Cytomegalovirus (CMV) IgM
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Cytomegalovirus (CMV) PCR
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Cytospin