The principle of Y-chromosome DNA Exclusion Test (MBE)

Maternal blood Y-DNA test (MBY) must be done before conducting Y-chromosome DNA exclusion (MBE). If the MBY test results indicate that there is a detectable amount of Y-DNA in the sample submitted, then the expected mother can proceed to take the MBE test. The MBE test aims to analyze and compare the DNA markers, which are found by the fetal DNA in the maternal blood sample, with the alleged father's blood sample in order to find out whether their parent-child relation is excluded or not.

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Service Procedure

PART 1 : Contact your physician or your clinic

PART 2 : Draw sample from the clinic

PART 3 : Receive Report

PART 4 : Once the report is ready, the clinic will inform you to collect your report. If you need report counselling service, please contact the clinic.

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Q&A

QWhen is the suitable time for expected mother to do the Maternal Blood Y-DNA Test (MBY) + Y-chromosome DNA Exclusion (MBE)?

7 weeks pregnant or above (subject to ultrasound examination)

QWhat are the limitations of Y-chromosome DNA exclusion (MBE)?

  1. Maternal blood Y-DNA test (MBY) should be done before conducting Y-chromosome DNA Exclusion (MBE). If the MBY test results indicate that there is a detectable amount of Y-DNA in the sample submitted, then the expected mother can proceed to take MBE test.
  2. If there are more than one alleged fathers and they share the same paternal line (such as brothers, uncle & nephew, grandfather & grandson, etc.), the results would be “Non-Exclusion”.

QWhen will clients receive the report for the Maternal Blood Y-DNA Test (MBY) + Y-chromosome DNA Exclusion (MBE)?

In about 5 working days after DiagCor receive all the samples.

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