Table 1.

Statistics for tube usage and blood loss due to phlebotomy from 2018 to 2021.

Patient Type	Year	Patient No.	Order No.	Tube No.	No. Of Tubes per Order				Blood Loss per Order (ml)
					Mean	Median	95th Percentile	Max	Mean	Median	95th Percentile	Max
All Patients	2018	206,706	303,243	959,564	3.08	3	8	22	12.2	10	30	106
	2019	240,332	343,352	1,084,054	3.07	3	7	25	12.1	10	28.7	106.7
	2020	250,179	358,503	1,190,826	3.24	3	8	24	12.9	12	30	108
	2021	286,861	403,077	1,387,905	3.34	3	8	27	13.3	12	31.7	118.7
Emergency	2018	25,475	30,086	84,869	2.80	3	5	12	10.4	12	18.7	50.7
	2019	26,540	32,536	95,410	2.91	3	5	12	10.9	12	18.7	51
	2020	24,787	29,013	94,222	3.23	3	5	14	12.3	12	18.7	69
	2021	30,058	34,612	112,891	3.25	3	5	15	12.3	12.7	18.7	68
ICU	2018	2753	14,683	59,567	3.97	4	8	22	15.2	14.7	31	89.7
	2019	2939	15,974	64,278	3.94	4	8	23	14.9	14.7	29.7	90.7
	2020	2890	17,491	71,321	3.98	4	8	24	15.5	14.7	33.7	105.7
	2021	3314	19,069	80,131	4.10	4	9	27	16.2	14.7	36	115.4
Inpatient	2018	32,476	98,423	425,046	4.24	4	10	22	16.4	14.7	41	106
	2019	35,698	103,954	455,443	4.30	4	10	25	16.5	14.7	40.7	106.7
	2020	37,272	110,669	497,770	4.42	4	11	23	17.1	14.7	42.7	108
	2021	39,641	117,395	566,631	4.73	4	12	26	18.4	14.7	48.1	112.7
Outpatient	2018	148,658	160,070	390,082	2.40	2	5	16	9.9	10	22	81.4
	2019	178,083	190,920	468,923	2.41	2	5	17	9.9	10	22	77.4
	2020	187,920	201,390	527,513	2.57	2	6	19	10.6	10	24	90.4
	2021	216,910	232,040	628,252	2.65	2	6	23	10.9	10	25	97.4

Note: Mean were calculated as the trimmed average with a truncation ratio of 1%.