From: Assessment of feto-maternal hemorrhage among rhesus D negative pregnant mothers using the kleihauer-betke test (KBT) and flow cytometry (FCM) in Addis Ababa, Ethiopia
Method
Amount of FMH
Frequency
Percent
KBT
Negative
36
48.0
<4 ml
28
37.3
4-10 ml
9
12.0
10-30 ml
1
1.3
>30 ml
Total
75
100.0
FCM
30
40.0
19
25.3
20
26.7
4
5.3
>30
2
2.7