Clinical Indication ID & Name
Maternal cell contamination testing
Test Group
Core/Specialised
Specialties
Test code
R321.1
Test name
N/A
Target genes
Genomewide
Test scope
n/a
Test method/ technology
Identity testing
Optimal Family Structure
n/a
Eligibility Criteria
Pregnancy requiring maternal cell contamination to inform interpretation of other testing, for example invasive prenatal testing, tests on fetal tissues or tests performed on cord blood
Testing will often be initiated by the testing laboratory but relevant samples will be required in advance of testing
Commissioning group
Core/Specialised
Overlapping idications
n/a
Address for samples/request forms
Please refer to the test request form.
Contact with queries
Supporting documents
n/a
Education resources
n/a
Service updates
n/a
Request form download
Consent record
See consent guidance in test request form
Sample requirements
Sample Requirements Each sample must be sent labelled with 3 patient identifiers and must state the sample type clearly on the sample container. Sample Rejection Samples may be rejected for the following reasons: 1. Samples and request form do not show at least three identical patient identifiers 2. The sample is in the incorrect collection media 3. The request form is not sufficiently completed 4. The sample is not of sufficient volume 5. The sample is too old Sample Storage and Volume Required: For postnatal referrals: Peripheral blood (2-3ml) in an EDTA and lithium heparin bottles, or 3μg DNA. For Prenatal referrals: DNA sample (50ng), amniotic fluid in a dry sterile container (20ml), CVS (20mg) (please discuss with the laboratory). Storage, sample packing and transportation: Please notify the laboratory before sending prenatal samples. All prenatal samples must arrive in the laboratory on the day of sampling, preferably before 3pm. Patient/Clinician Instructions: N/A Factors affecting performance of test/interpretation of results: Do not spin down or freeze samples before sending.