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Table 2 Types of pre-analytical hematology laboratory errors from different departments in SPHMMC, Addis Ababa, Ethiopia

From: Errors in the Hematology Laboratory at St. Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia

Categories Requests
N (%)
Emergency
N (%)
Inpatient
N (%)
Outpatient
N (%)
Private wing
N (%)
No location
N (%)
Total 2606 386 (15) 529 (20.3) 1509 (58) 163 (6.3) 19 (0.73)
Pre-analytical 560 (21.5) 91 (23.6) 123 (23.3) 311 (20.7) 28 (17.2) 7 (35)
Hemolysis 193 (34.5) 10 (11) 59 (48) 122 (39.2) 1 (3.6) 1 (14.3)
Clotted 13 (2.3) 5 (5.5) 5 (4.1) 1 (0.3) 2 (7.1) 0 (0.0)
Mislabeled 32 (5.7) 28 (30.8) 1 (0.8) 1 (0.32) 2 (7.1) 0 (0.0)
Over sample 45 (8.0) 8 (8.8) 20 (16.3) 15 (4.8) 2 (7.1) 0 (0.0)
Inadequate sample 274 (48.9) 30 (32.9) 51 (41.4) 171 (56.3) 19 (67.9) 3 (42.9)
Delayed sample 3 (0.5) 2 (2.2) 1 (0.8) 0 (0.0) 0 (0.0) 0 (0.0)