Table. 3.

Proficiency test results for complete blood count

Item No. of participants Median Min Max Mean±SD CV (%) No. except outliers Outliers (%)
1st
WBC count
HH-20-01 1,764 7.47 0.08 76.00 7.458±0.223 3.0 1,659 6.0
HH-20-02 1,763 3.00 1.01 30.00 2.997±0.104 3.5 1,692 4.0
HH-20-03 1,763 21.78 0.22 27.20 21.733±0.754 3.5 1,679 4.8
RBC count
HH-20-01 1,763 4.71 0.00 6.67 4.711±0.090 1.9 1,675 5.0
HH-20-02 1,763 2.27 0.00 5.83 2.269±0.051 2.2 1,700 3.5
HH-20-03 1,762 5.00 0.95 7.35 4.996±0.095 1.9 1,679 4.7
Hemoglobin
HH-20-01 1,766 13.4 4.4 16.4 13.39±0.18 1.4 1,626 7.9
HH-20-02 1,765 5.5 4.4 54.6 5.54±0.15 2.8 1,715 2.8
HH-20-03 1,765 15.9 5.3 53.0 15.95±0.30 1.9 1,703 3.5
Hematocrit
HH-20-01 1,762 42.6 5.3 55.5 42.08±2.29 5.4 1,732 1.7
HH-20-02 1,761 17.9 2.6 80.2 17.70±0.97 5.5 1,725 2.0
HH-20-03 1,761 48.7 4.2 99.9 48.07±2.59 5.4 1,710 2.9
Platelet count
HH-20-01 1,763 242 61 6,275 241.4±12.6 5.2 1,690 4.1
HH-20-02 1,762 82 48 8,492 81.7±5.8 7.1 1,673 5.1
HH-20-03 1,762 472 83 4,628 471.0±24.3 5.2 1,693 3.9
2nd
WBC count
HH-20-04 1,768 7.72 1.57 22.20 7.740±0.247 3.2 1,653 6.5
HH-20-05 1,768 3.04 0.82 99.99 3.046±0.087 2.9 1,590 10.1
HH-20-06 1,767 21.69 2.17 31.40 21.663±0.672 3.1 1,656 6.3
RBC count
HH-20-04 1,768 4.60 0.60 5.81 4.603±0.084 1.8 1,667 5.7
HH-20-05 1,768 2.27 1.33 9.99 2.280±0.064 2.8 1,729 2.2
HH-20-06 1,767 5.21 0.80 7.11 5.201±0.098 1.9 1,667 5.7
Hemoglobin
HH-20-04 1,771 13.6 5.3 17.8 13.63±0.20 1.5 1,679 5.2
HH-20-05 1,771 5.7 4.3 99.9 5.71±0.16 2.8 1,710 3.4
HH-20-06 1,770 16.1 5.7 22.3 16.17±0.30 1.9 1,709 3.4
Hematocrit
HH-20-04 1,767 42.5 5.2 58.6 42.08±2.06 4.9 1,705 3.5
HH-20-05 1,767 17.4 10.5 99.9 17.36±0.79 4.6 1,732 2.0
HH-20-06 1,766 49.4 7.0 98.3 48.87±2.29 4.7 1,686 4.5
Platelet count
HH-20-04 1,767 238 73 2,200 238.6±15.0 6.3 1,676 5.1
HH-20-05 1,767 80 55 9,999 81.1±6.4 7.9 1,681 4.9
HH-20-06 1,766 475 82 4,380 473.7±25.4 5.4 1,664 5.8

Abbreviations: SD, standard deviation; CV, coefficient of variation; WBC, white blood cell; RBC, red blood cell.

Lab Med Qual Assur 2021;43:1~8 https://doi.org/10.15263/jlmqa.2021.43.1.1
© Lab Med Qual Assur