A gene on chromosome 4q31.3 that encodes peptidylprolyl cis-trans isomerase D (cyclophilin D), which, as with other PPIs, accelerates protein folding. It catalyses the cis-trans isomerisation of proline-imidic peptide bonds in oligopeptides.
We first used PPID data to assess variation in collection volumes among different days of the week under the existing staffing model.
We then determined typical collection volumes for each hour of the day under the existing staffing model using PPID data recorded during a 4-week period.
All outcome measures were calculated from PPID data.
Because our PPID system does not electronically capture the number of orders for each phlebotomy round, we relied on a combination of paper-based and electronic data to estimate the workload at each hour of the day.