MATERNAL SERUM TEST
Department: Phlebotomy
Alternate Names for Test: 1st TRIMESTER SCREEN
2nd TRIMESTER SCREEN
ANTENATAL SCREENING FOR DOWNS SYNDROME
DOWN'S SYNDROME
FIRST TRIMESTER SCREEN
MSS1
MSS2
SECOND TRIMESTER SCREEN
TRIPLE TEST
Specimen Collection Requirements:
Patient Preparation: Patient must be between 9 weeks and 13 weeks/6 days gestation for first trimester 
requests and 14 to 20 weeks for 2nd trimester.
Phlebotomist Instructions: DO NOT COLLECT ON A SATURDAY.

TRANSPORT IN A RED URGENT BAG TO THE MAIN LABORATORY

All forms MUST be checked to ensure the following information is complete:
1) Collection date and time
2) Additional information such as ethnicity

If patient supplies a scan send with specimen, if scan is not provided proceed 
without it, note on form it has not been supplied.

PLEASE NOTE MUST SUPPLY 2 X  DEDICATED SST TUBES - CAN NOT SHARE WITH OTHER TESTS




Sample Type:

2x Yellow SST (Serum Separator) tube 5.0mL

Minimum Sample Volume: Tube must be full.
Pre-Analytical Storage Requirements: Separate within 4 hours of collection
Transport Requirements: Freeze
Additional Information: Must have a completed request form from:

http://www.labnet.health.nz/resources/file/biochemistry-specialist/MSS%20request
%20form/Request%20Form%202013.pdf


Maternal age must be provided for the risk factor to be calculated. 

NOTE:  No charge to patient

NOTE:  Results issued directly to requesting practitioner by testing laboratory 
depending on receipt of the patients scan by the referring laboratory - this can be 
several weeks. 

Referred Specimens:
Referred to: Canterbury Health Laboratories
Link to Reference Lab Website: http://www.labnet.co.nz/testmanager
Preferred Aliquot: 3mL serum
Minimum Aliquot: 1mL serum
Pre-Transport Requirements to Reference Lab: Must separate within 4 hours of collection.
Freeze 
Transport Requirements to Reference Lab: Frozen 
In the Lab:
Lab Test Code: RMST
Turnaround Time: Is dependent on when the patient's scan is received by the reference laboratory, this can be up to several weeks.
Reference Interval & Interpretation: Provided with Reference Laboratory result.
Link to Application and Diagnostic Use Website: http://www.rcpamanual.edu.au/index.php?option=com_pttests&view=tests&Itemid=77
Notes: Results isssued directly to requesting practitioner by testing laboratory.
Contact Details:
Lab Contact: Julie Page
Department Name: Phlebotomy
Phone: (04) 3815900 ext 748
Fax: (04) 3815948
Email: jpage@apath.co.nz

Test Information last updated on 02/09/2013
Website last updated on 13/10/2014 08:43

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