Table 3. Cord Blood Platelet Counts for... | American Society of Hematology

Table 3.

Cord Blood Platelet Counts for HPA-1a–Positive Infants of Alloimmunized Women and All Infants of Nonalloimmunized Women and Normal Controls

Cord Platelet Count (10⁹/L)	Alloimmunized			Nonalloimmunized	Normal Controls
Cord Platelet Count (10⁹/L)	Persistent Antibodies	Transient Antibodies^*	Postnatal Antibodies^†	Nonalloimmunized	Normal Controls
>150	7	4	3	237	200
50-150	10	1	2	10	0
<50	9^‡	0	0	2^2-153	0
Total	26	5	5	249	200

Cord Platelet Count (10⁹/L)	Alloimmunized			Nonalloimmunized	Normal Controls
Cord Platelet Count (10⁹/L)	Persistent Antibodies	Transient Antibodies^*	Postnatal Antibodies^†	Nonalloimmunized	Normal Controls
>150	7	4	3	237	200
50-150	10	1	2	10	0
<50	9^‡	0	0	2^2-153	0
Total	26	5	5	249	200

*In one case, cord platelet count was not determined.

In two cases, cord platelet count was not determined.

P = .00001 Severe thrombocytopenia in persistently alloimmunized versus non-alloimmunized women (Fisher's exact test).

Platelet counts, 39 × 10⁹/L and 41 × 10⁹/L.