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. Author manuscript; available in PMC: 2015 Jun 26.
Published in final edited form as: Prenat Diagn. 2008 Oct;28(10):892–899. doi: 10.1002/pd.2079

Table 3. Number of NRBCs in 21 fetuses with aneuploidy.

Abnormality Number of cases Gestational age (weeks) Mean NRBC/mL Median NRBC/mL Range NRBC/mL
+13 1 16 4.94 N/A N/A
+18 5 11–21 14.97 12.29 0.98–31.16
+21 13 11–21 52.81 31.82 5.65–274.36
XXY/XXX 2 18–19 7.41 7.41 6.67–8.14

NRBC, nucleated red blood cell.