Table II.

Overview of laboratory parameters analysed in the studies on cell salvage in obstetrics.

Year/Author	Quality control of shed blood
1983/Keeling115	Bacterial contamination, haematocrit, visual haemolysis check
1989/Durand165	2,3-DPG, ATP, bacterial contamination, blood and plasma viscosities, erythrocyte deformability and morphology, foetal cells, haemolysis
1990/Zichella116	Coagulant activity (PT), phosphatidylglycerol
1991/Thornhill168	α-foetoprotein, foetal squamous cells, lanugo hair, trophoblasts, vernix caseosa
1996/Fuhrer169	α-foetoprotein, foetal cells, Kleihauer test*, tissue factor
1997/Bernstein170	Tissue factor
1998/Rainaldi120	Bacterial contamination, foetal haemoglobin, foetal red blood cells, foeto-placental material, haemolysis, procoagulant activity
1999/Catling171	α-foetoprotein, foetal squamous cells, fetal red cells, lanugo hair, leucocytes, trophoblasts
1999/Fong167	α-foetoprotein, haemoglobin, haematocrit, haemolysis, Kleihauer test, lanugo hair, squamous cells, vernix caseosa
2000/Waters166	Bacterial contamination, foetal haemoglobin, K+, lamellar body, squamous cells
2008/Sullivan172	α-foetoprotein, foetal red cells, full blood count, heparin, squamous cells
2009/Okunuga129	Blood film microscopy (search for sickled cells)
2010/McDonnell132	α-foetoprotein, haematocrit, haemolysis, K+, Kleihauer test

Legend:

ATP: adenosine triphosphate; 2,3-DPG: 2,3-diphosphoglycerate; PT: prothrombin time; K⁺: potassium ion;

^*:not performed due to haemolysis of sample.