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 - 0 0 0 - 0
Myeloblast/Promyelocyte 0 - 0 0 0 - 0
Lymphoblast/Prolymphocyte 0 - 0 0 0 - 1
*[Lymphoblasts+Blasts not classif.] 0 - 5 0 0 - 1
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 0 - 0 0 0 - 0
Metamyelocyte 0 - 0 0 0 - 0
Band neutrophil 0 - 4 0 0 - 3
Segmented neutrophil 24 - 38 30 18 - 40
*[Total neutrophils] 25 - 39 31 19 - 40
Eosinophil 0 - 3 1 0 - 5
Basophil 0 - 1 0 0 - 2
Lymphocyte 26 - 65 52 10 - 69
Atypical lymphocyte 0 - 30 10 0 - 47
*[Lymphocytes+Atypical lymphocytes] 55 - 70 62 50 - 74
Monocyte 0 - 8 4 0 - 10
Plasma cell 0 - 0 0 0 - 0
NRBC / 100 WBC 0 - 0 0 0 - 0
* 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 None None ( 64%) Slight ( 35%) Moderate ( 0%) MarKed ( 0%)
Poikilocytosis None None ( 84%) Slight ( 16%) Moderate ( 0%) MarKed ( 0%)
Macrocytosis None None ( 97%) Slight ( 3%) Moderate ( 0%) MarKed ( 0%)
Microcytosis None None ( 73%) Slight ( 19%) Moderate ( 8%) MarKed ( 0%)
Hypochromia None None ( 98%) Slight ( 2%) Moderate ( 0%) MarKed ( 0%)
Polychromasia None None ( 92%) Slight ( 8%) Moderate ( 0%) MarKed ( 0%)
Bizarre or irregular platelets Absent Absent(100%) Present( 0%)
Clumped platelets Absent Absent( 99%) Present( 1%)
Giant platelets Absent Absent( 85%) Present( 15%)
Platelet satellitosis Absent Absent(100%) Present( 0%)
Auer rods Absent Absent(100%) Present( 0%)
Döhle bodies Absent Absent(100%) Present( 0%)
Hypersegmentation Absent Absent( 99%) Present( 1%)
Pelger Huët anomaly Absent Absent(100%) Present( 0%)
Smudge / Basket cells Present Absent( 28%) Present( 72%)
Toxic granulation Absent Absent( 97%) Present( 3%)
Acanthocytes Absent Absent(100%) Present( 0%)
Basophilic stippling Absent Absent( 99%) Present( 1%)
Blister cells (pre keratocytes) Absent Absent(100%) Present( 0%)
Cabot rings Absent Absent(100%) Present( 0%)
Echinocytes (crenated/burr cells) Absent Absent( 99%) Present( 1%)
Elliptocytes Absent Absent( 96%) Present( 4%)
Howell-Jolly bodies Absent Absent(100%) Present( 0%)
Pappenheimer bodies Absent Absent(100%) Present( 0%)
Red cell agglutinates Absent Absent(100%) Present( 0%)
Rouleaux Absent Absent( 93%) Present( 7%)
Schistocytes Absent Absent( 99%) Present( 1%)
Schüffner's granules Absent Absent(100%) Present( 0%)
Sickle cells (drepanocytes) Absent Absent(100%) Present( 0%)
Spherocytes Absent Absent( 93%) Present( 7%)
Stomatocytes Absent Absent( 99%) Present( 1%)
Target cells (codocytes) Absent Absent( 98%) Present( 2%)
Tear drop cells (dacrocytes) Absent Absent( 95%) Present( 5%)
Bacteria Absent Absent(100%) Present( 0%)
Fungi/yeast Absent Absent(100%) Present( 0%)
Malaria/Babesiosis Absent Absent(100%) Present( 0%)
Stain precipitate Absent Absent( 97%) Present( 3%)
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