Common test name Primary test name Specimen Container Referred test Patient cost Comments/Instructions
Warfarin levels Warfarin levels Blood  Serum Separator Tube (SST)  No  No   
Washings Cytology, Bronchial Wash Bronchial Washings  Bronchial Suction Trap Container  No  No  Sample may be shared with Microbiology. Please check other laboratory collection requirements. Colle... (more)  
WCC Differential White Cell Count Blood  EDTA Tube 4 ml  No  No   
Werdnig Hoffman Gene Spinal Muscular Atrophy Genetic Testing Blood  EDTA Tube 4 ml  Yes  No   
West Nile Virus PCR Flavivirus PCR Blood  Serum Separator Tube (SST)  Yes  Yes  Clinical details essential. Tests can also performed on CSF. Venepuncture.  
Whipples Disease, Investigation of CSF or Tissue biopsy Whipples Disease, Investigation of CSF or Tissue biopsy   Sterile container  Yes  No   
White cell antibodies HLA antibodies Blood  Plain Tube 10 ml  Yes  No   
White cell differential (manual) Blood Film Examination Blood  EDTA Tube 4 ml  No  No   
Whole Blood Cholinesterase Cholinesterase, Red Cell Blood  EDTA Tube 4 ml  Yes  No   
Whooping Cough Nasopharyngeal Swab, Microscopy and culture Nasopharyngeal aspirate or pernasal swab  Urine/Specimen container 50ml  No  No  Nasopharyngeal aspirate is the preferred specimen. Include clinical details such as sinusitis, CSF l... (more)  
Whooping Cough antibodies Bordetella pertussis antibodies Blood  Serum Separator Tube (SST)  Yes  No  Please provide date of onset of illness. Venepuncture  
Whooping Cough PCR Bordetella pertussis PCR   Sterile container  Yes  Yes   
Widal test Salmonella antibodies Blood  Serum Separator Tube (SST)  Yes  No   
Williams Gene Syndrome Williams Gene Syndrome Blood  Lithium Heparin Tube WITHOUT GEL  Yes  No   
Worm for examination Worm for examination Worm for identification  Urine/Specimen container 50ml  No  No   
Wound swab, Microscopy and culture Wound swab, Microscopy and culture Wound swab  Transswab- swab in transport medium  No  No