The titer of HDN maternal IgG antibodies is unclear, please explain.

Patient's question:

Okay, here is the translation following your instructions:
Go to the hospital for a check-up, HDN maternal IgG antibody titer 1:512. What's wrong? How should I pay attention? Is medication needed? Thank you

Doctor's answer:

Analysis of the condition: Hello, the reference value for this test is 16-128. If the serum is diluted to 16 to 128 times, the antibody cannot be detected, but your dilution to 512 times still allows detection, indicating that your antibody concentration is significantly higher.
Advice: Hello, it may be a cause of neonatal hemolysis. It is recommended to monitor the situation, and if necessary, take measures for treatment.

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