Table 2.
Loss of PLT collections due to guard band failure
| Collections (n) | 2016 | 2017 | 2018 | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan* ‐Mar | Apr ‐ Jun | Jul ‐Sep | Oct ‐ Dec | Jan ‐ Mar | Apr ‐ Jun | Jul ‐Sep | Oct ‐ Dec | Jan ‐ Mar | Apr ‐ Jun | Jul ‐Sep | Oct ‐ Dec | ||
| Overall | 463 | 564 | 579 | 544 | 542 | 565 | 610 | 565 | 484 | 536 | 501 | 516 | 6468 |
| Outside guard bands | 34 | 26 | 28 | 16 | 19 | 20 | 16 | 14 | 14 | 10 | 5 | 7 | 209 |
| Failure rate (%)† | 7.3 | 4.6 | 4.8 | 2.9 | 3.5 | 3.5 | 2.6 | 2.5 | 2.9 | 1.9 | 1.0 | 1.4 | 3.2 |
| PLT retention‡ | 93% ± 1.2% (n = 828) | 94% ± 1.5% (n = 794) | 91% ± 1.4% (n = 966) | NA | |||||||||
*
beginning January 11, 2016. A collection with high platelet yield can be split and result in 2 transfusions, often in different patients.
†
Failure to meet the guard band of the Dual Storage kits: loss of successful platelet collections (%).
‡
Retention rate of platelets after the PRT process (mean ± standard deviation; number of PRT platelet products tested for quality assurance to document the loss of platelets) n/a − not applicable.