Test Entry - Detail

Group and Screen

General

Clinical Use:

Required for the transfusion of blood & blood products. Also required in the antenatal & perinatal settings to minimise the incidence and severity of Haemolytic Disease of the Newborn by identifying RhD Negative women, identifying women with clinically significant alloantibodies to red cell antigens, assisting in the diagnosis and management of HDN both during pregnancy and following delivery, and identifying RhD Negative women who may require prophylactic RhD Immunoglobulin.

Availability:

Samples are tested routinely during the testing laboratory's hours of operation.

Aliases/Synonyms:

Antenatal Group and Screen, Crossmatch, GAH, GAS, Group and Hold, Group and Save, Group Antibody Screen, Indirect Coombs Test, Isohaemagglutinins, Maternal Group and Screen, Red Cell Phenotyping, XMatch,

Code:

GAS

Handling Instructions (to laboratory):

Send sample chilled.
Deliver sample to laboratory as soon as possible.

Hyperlink:

https://fasttrack.ict.pathwest.com.au/Portal/SOP-2059.docx

Reference Interval:

Not applicable

Collection Requirements

Container:

EDTA (PINK),

Sample Type:

See container

Minimum Collection Volume:

3y to Adult: 6mL
4m to 2y: 3mL
Neonate (Procedure): 0.5mL
Neonate (Non-Procedure): See Neonatal Group

Collection Instructions:

Sample expiry for crossmatching:
* Antenatal patients can undergo a Group & Screen at any time
* 48 hours if transfused within last 3 months (up to 72 hours accepted)
* 6 days if pregnant non-transfused within last 3 months
* 13 days if non-pregnant non-transfused within last 3 months
Patient form
Transfusion Medicine Questionnaire
Specimen labels and Collectors Declaration on request form must be signed by the collector with Date and Time specified as per minimum requirements for Clinical Samples and Request Forms - PathWest SOP-057. For non-procedure neonatal patients always refer to Neonatal Group and Direct Antiglobulin Test.

Processing Requirements

Alternate Containers:

Processing Instructions:

Refer all samples to Transfusion to determine testing suitability.

Sample Stability
Specimen Type	18 - 25°C	2 - 8°C	-20°C
Whole Blood (EDTA)	Up to 48 hours	Up to 7 days	N/A
Separated Plasma	Up to 48 hours	Up to 7 days	Up to 3 months

Minimum Assay Volume:

Stability:

See above

Transport Instructions (to testing laboratory):

Send sample chilled.
Samples that require distribution to another site or pathology provider must be placed into a clear biohazard bag with a white road transport label applied clearly indicating the destination.
A copy of the Transfusion Medicine Questionnaire and/or request form should accompany the specimen.

Testing Locations

Performed at:

Section	Department	Site	Contact Phone
-	Laboratory	Albany Health Campus	9892 2240
-	Laboratory	Armadale Health Service	9391 2030
-	Laboratory	Bentley Health Service	9416 3720
-	Laboratory	Broome Health Campus	9194 2286
-	Laboratory	Bunbury Hospital	9722 1280
-	Laboratory	Busselton Hospital	9753 6260
-	Laboratory	Carnarvon Hospital	9941 0431
-	Laboratory	Collie Hospital	9734 1132
-	Laboratory	Derby Hospital	9193 3371
-	Laboratory	Esperance Health Campus	9079 8139
-	Laboratory	Geraldton Regional Hospital	9956 2254
-	Laboratory	Hedland Health Campus	9174 1504
-	Laboratory	Kalgoorlie Health Campus	9080 5825
-	Laboratory	Karratha Health Campus	9144 7674
-	Laboratory	Katanning Health Service	9821 6334
-	Laboratory	Kununurra Hospital	9166 4245
-	Laboratory	Manjimup Hospital	9772 5137
-	Laboratory	Merredin Health Service	9041 1532
-	Laboratory	Narrogin Hospital	9881 0481
-	Laboratory	Northam Health Service	9690 1657
-	Laboratory	Osborne Park Hospital	9244 2326
-	Laboratory	Rockingham General Hospital	9599 4239
Transfusion	Haematology	Fiona Stanley Hospital	6152 8005
Transfusion	Haematology	Fremantle Hospital	9431 2462
Transfusion	Haematology	King Edward Memorial Hospital	6458 2748
Transfusion	Haematology	QEII Medical Centre	6383 4018
Transfusion	Haematology	Royal Perth Hospital	9224 2409

Last Updated : 18-11-2024 09:30