Cytohematology Proficiency Testing 2 February 1998
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Cell Classification or Finding Expected Range Participant Median Participant Range
------------------------------ -------------- ------------------ -------------------
Blast cell not classified 0 - 0 0 0 - 0
Myeloblast/Promyelocyte 0 - 0 0 0 - 0
Lymphoblast/Prolymphocyte 0 - 0 0 0 - 0
Monoblast/Promonocyte 0 - 0 0 0 - 0
Erythroblast/Pronormoblast 0 - 0 0 0 - 0
Lymphoma cell 0 - 0 0 0 - 0
Hairy cell 40 - 96 66 20 - 96
Myelocyte 0 - 1 0 0 - 1
Metamyelocyte 0 - 1 0 0 - 1
Band neutrophil 0 - 2 0 0 - 4
Segmented neutrophil 2 - 10 6 1 - 14
*[Total neutrophils] 3 - 11 6 2 - 15
Eosinophil 0 - 2 1 0 - 3
Basophil 0 - 0 0 0 - 1
Lymphocyte 12 - 36 24 11 - 40
Atypical lymphocyte 0 - 3 0 0 - 3
Monocyte 0 - 3 1 0 - 5
Plasma cell 0 - 0 0 0 - 0
NRBC / 100 WBC 0 - 2 1 0 - 2
* Obtained by combining individual results.
** Participant range is the central 98 percentile of all participant results.
Cell Classification or Finding Expected Result Participant Results
-------------------------------- --------------- -----------------------------------------------------------
Anisocytosis Slight None ( 8%) Slight ( 57%) Moderate ( 33%) MarKed ( 1%)
Poikilocytosis None None ( 65%) Slight ( 33%) Moderate ( 2%) MarKed ( 0%)
Macrocytosis Slight None ( 26%) Slight ( 38%) Moderate ( 34%) MarKed ( 2%)
Microcytosis None None ( 74%) Slight ( 24%) Moderate ( 3%) MarKed ( 0%)
Hypochromia None None ( 79%) Slight ( 19%) Moderate ( 2%) MarKed ( 0%)
Polychromasia Slight None ( 26%) Slight ( 68%) Moderate ( 6%) MarKed ( 0%)
Bizarre or irregular platelets Absent Absent( 96%) Present( 4%)
Clumped platelets Absent Absent(100%) Present( 0%)
Giant platelets Absent Absent( 89%) Present( 11%)
Platelet satellitosis Absent Absent(100%) Present( 0%)
Auer rods Absent Absent(100%) Present( 0%)
Döhle bodies Absent Absent(100%) Present( 0%)
Hypersegmentation Absent Absent(100%) Present( 0%)
Pelger Huët anomaly Absent Absent(100%) Present( 0%)
Smudge / Basket cells Present Absent( 31%) Present( 69%)
Toxic granulation Absent Absent( 88%) Present( 12%)
Acanthocytes Absent Absent( 99%) Present( 1%)
Basophilic stippling Absent Absent( 96%) Present( 4%)
Blister cells (pre keratocytes) Absent Absent(100%) Present( 0%)
Cabot rings Absent Absent(100%) Present( 0%)
Echinocytes (crenated/burr cells) Absent Absent( 95%) Present( 5%)
Elliptocytes Absent Absent( 97%) Present( 3%)
Howell-Jolly bodies Absent Absent( 98%) Present( 2%)
Pappenheimer bodies Absent Absent(100%) Present( 0%)
Red cell agglutinates Absent Absent(100%) Present( 0%)
Rouleaux Absent Absent( 94%) Present( 6%)
Schistocytes Absent Absent( 93%) Present( 7%)
Schüffner's granules Absent Absent(100%) Present( 0%)
Sickle cells (drepanocytes) Absent Absent(100%) Present( 0%)
Spherocytes Absent Absent( 82%) Present( 18%)
Stomatocytes Absent Absent( 92%) Present( 8%)
Target cells (codocytes) Absent Absent( 90%) Present( 10%)
Tear drop cells (dacrocytes) Absent Absent( 93%) Present( 7%)
Bacteria Absent Absent( 99%) Present( 1%)
Fungi/yeast Absent Absent(100%) Present( 0%)
Malaria/Babesiosis Absent Absent(100%) Present( 0%)
Stain precipitate Absent Absent( 95%) Present( 5%)
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