Cytohematology Proficiency Testing 24 March 1997
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Cell Classification or Finding Expected Range Participant Median Participant Range**
---------------------------------------------- -------------- ------------------ -------------------
Blast cell not classified 0 - 3 0 0 - 5
Myeloblast/Promyelocyte 0 - 8 1 0 - 10
*[Myleblasts + Blasts not classified] 0 - 10 2 0 - 16
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 0 - 0 0 0 - 0
Myelocyte 5 - 23 14 2 - 24
Metamyelocyte 4 - 18 9 3 - 23
Band neutrophil 4 - 18 10 2 - 22
Segmented neutrophil 34 - 55 44 31 - 59
*[Total neutrophils] 45 - 64 54 42 - 68
Eosinophil 0 - 2 0 0 - 2
Basophil 0 - 2 0 0 - 2
Lymphocyte 6 - 19 12 0 - 21
Atypical lymphocyte 0 - 2 0 0 - 6
Monocyte 0 - 13 7 0 - 16
Plasma cell 0 - 0 0 0 - 0
NRBC / 100 WBC 0 - 1 0 0 - 1
* 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 ( 15%) Slight ( 61%) Moderate ( 23%) MarKed ( 0%)
Poikilocytosis Slight None ( 55%) Slight ( 42%) Moderate ( 3%) MarKed ( 1%)
Macrocytosis None None ( 66%) Slight ( 33%) Moderate ( 1%) MarKed ( 0%)
Microcytosis None None ( 56%) Slight ( 32%) Moderate ( 12%) MarKed ( 0%)
Hypochromia None None ( 71%) Slight ( 24%) Moderate ( 5%) MarKed ( 0%)
Polychromasia None None ( 58%) Slight ( 40%) Moderate ( 1%) MarKed ( 0%)
Bizarre or irregular platelets Absent Absent( 88%) Present( 13%)
Clumped platelets Absent Absent( 88%) Present( 12%)
Giant platelets Present Absent( 42%) Present( 58%)
Platelet satellitosis Absent Absent(100%) Present( 0%)
Auer rods Absent Absent( 99%) Present( 1%)
Döhle bodies Absent Absent( 97%) Present( 3%)
Hypersegmentation Absent Absent( 98%) Present( 2%)
Pelger Huët anomaly Absent Absent( 99%) Present( 1%)
Smudge / Basket cells Absent Absent( 92%) Present( 8%)
Toxic granulation Absent Absent( 67%) Present( 33%)
Acanthocytes Absent Absent( 99%) Present( 1%)
Basophilic stippling Absent Absent( 69%) Present( 31%)
Blister cells (pre keratocytes) Absent Absent( 99%) Present( 1%)
Cabot rings Absent Absent(100%) Present( 0%)
Echinocytes (crenated/burr cells) Absent Absent( 99%) Present( 1%)
Elliptocytes Absent Absent( 92%) Present( 8%)
Howell-Jolly bodies Absent Absent( 97%) Present( 3%)
Pappenheimer bodies Absent Absent(100%) Present( 0%)
Red cell agglutinates Absent Absent(100%) Present( 0%)
Rouleaux Absent Absent( 91%) Present( 9%)
Schistocytes Absent Absent( 79%) Present( 21%)
Schüffner's granules Absent Absent(100%) Present( 0%)
Sickle cells (drepanocytes) Absent Absent(100%) Present( 0%)
Spherocytes Absent Absent( 84%) Present( 16%)
Stomatocytes Absent Absent( 79%) Present( 21%)
Target cells (codocytes) Absent Absent( 98%) Present( 2%)
Tear drop cells (dacrocytes) Absent Absent( 89%) Present( 11%)
Bacteria Absent Absent( 99%) Present( 1%)
Fungi/yeast Absent Absent(100%) Present( 0%)
Malaria/Babesiosis Absent Absent(100%) Present( 0%)
Stain precipitate Absent Absent( 92%) Present( 8%)
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