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Quadruple (QUAD) Test

Alias: 2nd trimester Downs Screening

Discipline: Clinical Chemistry

Test information: Quadruple test for second trimester Down's syndrome screening for singleton and twin pregnancies. Samples can be taken between 14+2 weeks to 20+0 weeks, with the best time being 16 weeks gestation. The special QUAD test request form must be completed to ensure Newcastle (where we send the sample) have all the information they require to produce the risk.

Specimen Type(s)
  • Blood;
Other Acceptable Specimen Type(s)
N/A
Specimen Container - Adult
  • Gold Top SST BD;
Specimen Container - Paediatric
  • N/A;
Analytes
  • N/A;
Part of a test profile?
No
Volume (min) of sample to be sent to laboratory
4ml
Patient Preparation, Sample Handling and Transport
Testing can be performed between 14+2 weeks to 20+0 weeks, with the best time being 16 weeks gestation.
Samples must be delivered to the laboratory the same or next day.
Do not take on a Friday afternoon unless can guarantee delivery to the laboratory the same day.
Please fully complete the special QUAD form and submit with the sample.
Maximum add on time
N/A
Units and Reference Ranges / Interpretation
N/A
UKAS number
8543
UKAS accredited test?
Yes
Comments
N/A

If you have any queries about a test or results interpretation please contact us.

Last updated: 19-06-2024