What is the role of blood tests in the diagnosis of neonatal abstinence syndrome (NAS)?

Updated: Dec 20, 2017
  • Author: Ashraf H Hamdan, MD, MBBCh, MSc, MRCP, FAAP; Chief Editor: Santina A Zanelli, MD  more...
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Blood samples are of limited value, because the window of detection is narrow owing to the rapid effects of metabolism and the low concentrations of drugs present in blood.

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