Laboratory Services
Platelet Count, Automated
Print this pageUpdated Test Information:
| Test Description |
Platelet Count, Automated
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| Synonym(s) |
PLT
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| Test ID |
PLT
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| General Information |
Evaluate, diagnose, and/or follow up bleeding disorders, drug-induced thrombocytopenia, idiopathic thrombocytopenia purpura (acute or chronic), disseminated intravascular coagulation, leukemia states, chemotherapeutic management of malignant disease states; investigate purpura, petechiae; evaluate response to platelet transfusions, steroids, or other therapy
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| Specimen Type |
Whole Blood
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| Specimen Requirements |
Lavender
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| Specimen Collection / Processing Instructions |
Lavender - Invert tube 8 to 10 times immediately after collection
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| Minimum Sample Volume |
0.5 mL of Whole Blood
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| Pediatric Min. Volume (if applicable) |
500 μL for pediatric microtainer capillary tubes; fill tube to capacity.
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| Additional Processing Details |
Specimen is stable at Room Temperature 1 day Specimen is stable Refrigerated 2 days
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| Stability |
Room Temperature: 1 day
Refrigerated: 2 days Frozen: Unacceptable |
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| Unacceptable Specimen Conditions |
Hemolysis; clotted specimen; specimen drawn in any anticoagulant other than EDTA; specimen diluted or contaminated with IV fluid; tube not filled with minimum volume; improper labeling; transfer tubes with whole blood; specimen received with plasma removed.
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| Limitations |
Clumping may cause false low count. Platelet satellitism around neutrophils will cause a pseudothrombocytopenia. RBC or WBC fragments including fragmented fragile leukemic cells and neutrophil pseudoplatelets may cause falsely elevated counts.
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| Methodology |
Automated
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| Estimated TAT |
0-2 days
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| Testing Schedule |
Monday-Saturday, & STAT
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| CPT Code(s) |
85049
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| Reference Range |
PLT, 10³/µL 150 - 400
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| Reflex Conditions |
None
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| Performing Lab |
Incyte Diagnostics
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| LOINC Code(s) |
777-3
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