Citrate phosphate dextrose adenine (CPDA-1) can be sampled from blood collection bags in a multi-dose manner.

Abstract

To evaluate the sterility of citrate phosphate dextrose adenine (CPDA-1) anticoagulant when sampled from blood collection bags in a multi-dose manner. 10 pre-filled CPDA-1 blood collection bags; 46 bacterial and 28 fungal culture result reports. 10 CPDA-1 blood collection bags were split into 2 equal groups and stored at either room temperature (24 °C) or refrigerator temperature (5 °C) for 30 days. Two bags in each group were designated as controls. Beginning on day 0 a 1.0 mL aliquot was withdrawn from each experimental bag and submitted for bacterial culture (aerobic and anaerobic) every 5 days, and fungal culture every 10 days. All 10 bags were sampled on day 30. Bacterial and fungal culture results were compiled and interpreted. 46 CPDA-1 aliquots were cultured, resulting in 2 positive microbial isolates: Bacillus was cultured from a previously unopened experimental bag on day 0, and Candida was cultured from a refrigerated experimental bag on day 30. Both positives are thought to represent post-sampling contamination, though these suspicions cannot be confirmed in the bag yielding Candida due to a lack of subsequent data. All other samples were negative for microbial growth. CPDA-1 blood collection bags stored at either 24 °C or 5 °C can be used in a multi-dose manner for up to 20 days when each sample is obtained aseptically. These results support the clinician's ability to utilize the contents of 1 bag multiple times rather than discarding the bag after a single use.