Abnormally low hCG in a complete hydatidiform molar pregnancy: The hook effect
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Highlights
► The hook effect occurs with extremely high levels of hCG, saturating detection antibodies, leading to falsely low laboratory results. ► In the literature, descriptions of the hook effect are rare in cases of gestational trophoblastic diseases. ► If unrecognized, this can lead to delayed therapy or mismanagement of care.
Keywords
Hook effect
Molar pregnancy
Falsely low hCG
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