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 - 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 0 - 0 0 0 - 0
Metamyelocyte 0 - 0 0 0 - 0
Band neutrophil 0 - 1 0 0 - 3
Segmented neutrophil 76 - 88 83 74 - 90
*[Total neutrophils] 77 - 88 83 75 - 90
Eosinophil 0 - 4 2 0 - 5
Basophil 0 - 4 2 0 - 7
Lymphocyte 8 - 18 12 6 - 20
Atypical lymphocyte 0 - 0 0 0 - 1
Monocyte 0 - 2 0 0 - 2
Plasma cell 0 - 0 0 0 - 0
NRBC / 100 WBC 0 - 2 0 0 - 3
* 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 Moderate None ( 4%) Slight ( 23%) Moderate ( 63%) MarKed ( 10%)
Poikilocytosis Slight None ( 11%) Slight ( 47%) Moderate ( 41%) MarKed ( 1%)
Macrocytosis Moderate None ( 5%) Slight ( 11%) Moderate ( 47%) MarKed ( 37%)
Microcytosis None None ( 75%) Slight ( 20%) Moderate ( 4%) MarKed ( 0%)
Hypochromia None None ( 58%) Slight ( 32%) Moderate ( 10%) MarKed ( 0%)
Polychromasia Slight None ( 23%) Slight ( 70%) Moderate ( 6%) MarKed ( 0%)
Bizarre or irregular platelets Absent Absent( 97%) Present( 3%)
Clumped platelets Absent Absent( 99%) Present( 1%)
Giant platelets Absent Absent( 57%) Present( 43%)
Platelet satellitosis Absent Absent(100%) Present( 0%)
Auer rods Absent Absent(100%) Present( 0%)
Döhle bodies Absent Absent( 99%) Present( 1%)
Hypersegmentation Present Absent( 4%) Present( 96%)
Pelger Huët anomaly Absent Absent(100%) Present( 0%)
Smudge / Basket cells Absent Absent( 98%) Present( 2%)
Toxic granulation Absent Absent( 99%) Present( 1%)
Acanthocytes Absent Absent( 79%) Present( 21%)
Basophilic stippling Absent Absent( 93%) Present( 7%)
Blister cells (pre keratocytes) Absent Absent( 98%) Present( 2%)
Cabot rings Absent Absent( 99%) Present( 1%)
Echinocytes (crenated/burr cells) Absent Absent( 57%) Present( 43%)
Elliptocytes Absent Absent( 71%) Present( 29%)
Howell-Jolly bodies Absent Absent( 95%) Present( 5%)
Pappenheimer bodies Absent Absent(100%) Present( 0%)
Red cell agglutinates Absent Absent( 99%) Present( 1%)
Rouleaux Absent Absent( 93%) Present( 7%)
Schistocytes Present Absent( 36%) Present( 64%)
Schüffner's granules Absent Absent(100%) Present( 0%)
Sickle cells (drepanocytes) Absent Absent(100%) Present( 0%)
Spherocytes Absent Absent( 81%) Present( 19%)
Stomatocytes Absent Absent( 96%) Present( 4%)
Target cells (codocytes) Absent Absent( 74%) Present( 26%)
Tear drop cells (dacrocytes) Absent Absent( 55%) Present( 45%)
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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