Test performed by the  Coagulation laboratory: ( Ext 22069 ).
For results, use ward computer or phone LabLINK:   22000 or (09) 307-8995 or 0800 522 758 .

The laboratories will perform the following range of coagulation screening as appropriate:

Provision of relevant clinical information will aid test selection and result interpretation.

BASIC SCREEN

• Activated Partial Thromboplastin Time
• Prothrombin Ratio or International Normalised Ratio
• Fibrinogen Assay
  

If results for the basic screen are outside the reference interval, follow up tests may be performed. These are routine follow up tests and include correction studies, tests to detect the presence of inhibitors and tests that may detect dysfunctional coagulation proteins, especially fibrinogen.

LIVER TRANSPLANT

• Prothrombin Ratio

• Fibrinogen Assay
  
   

See Activated Partial Thromboplastin Time

See Fibrinogen Assay

See INR

See Prothrombin Ratio

PLATELET DISORDERS

Platelet Function Screen (using PFA instrument) is available for the investigation of aspirin effect or if von Willebrand disease is suspected.

See Platelet Function Screen

PLATELET AGGREGATION

Studies are also available if a platelet function disorder is suspected. For platelet aggregation studies it is necessary to contact the Coagulation Laboratory (Haematology, LabPlus) to arrange a suitable time for the collection of samples. Coagulation will provide the appropriate tubes to the phlebotomy department when a time and  date has been confirmed.

Platelet Aggregation

LUPUS ANTICOAGULANT SCREEN

• APTT with correction studies
• Kaolin Clotting Time
• Dilute Russell Viper Venom Time
  

Specimen - See Lupus Anticoagulant

SPECIALISED SCREENS

von Willebrand's screen

Thrombophilia Screen

Fibrinolysis Screen

SPECIMEN: for specimen requirements, refer to individual screens by clicking on the above list.

Queries regarding choice and interpretation of tests may be referred to the Technologist in Charge, Registrar, or Haematologist.  Queries with regard to patient management should be referred to the Registrar, Haematologist (via Lablink or see below for contact numbers), or the Thrombosis and Haemostasis Service (ext 7889).

[ACH] Adult routine Coagulation Screens will be collected by the phlebotomy service. For children who require coagulation investigation, collection must be undertaken by the  Medical Staff. Paediatric collection tubes should be available in the wards. For Specialised Screens please consult the Haemostasis section. 

See von Willebrand's screen

See

Bleeding History