Table 1.

Comparison of the parameters of random donor platelets stored for 7 days at 22°C with and without additive solution

Parameter	Platelet with additive solution			Platelet without additive solution
	0 day	5 day	7 day	0 day	5 day	7 day
Platelet count (m/mm3)	245 ± 34	242 ± 32	239 ± 34	245 ± 30	240 ± 30	236 ± 34
Bacterial contamination	Sterile	Sterile	Sterile	Sterile	Sterile	Sterile
PF-3 (seconds)	2 ± 1	2 ± 1	2 ± 1	2 ± 1	2 ± 1	3 ± 1*
LDH (U/l)	132 ± 24	134 ± 22	139 ± 24	130 ± 23	134 ± 21	137 ± 22
pH	7.15 ± 0.03	7.13 ± 0.04	7.12 ± 0.05	7.16 ± 0.05	7.15 ± 0.02	7.12 ± 0.04
Glucose (mmol/l)	10.9 ± 2	10.0 ± 4	9.2 ± 4	13.4 ± 2	12.1 ± 2	7.6 ± 4*
Platelet aggregation % (5 μM ADP)	72 ± 4	63 ± 4	56±3	74 ± 4	60 ± 4	48 ± 3*

n = 30 units of random donor platelets; values are mean ± SD

^*P < 0.001 compared to 5 day samples