What does a laboratory result of lacking normal platelet (Lac nt platelet) count mean?

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From the Guidelines

A laboratory result of "lacking normal platelet" (Lac nt platelet) count means you have a low platelet count, also known as thrombocytopenia, which increases the risk of bleeding and requires medical attention. This condition is characterized by a platelet count below 150,000 per microliter of blood, with normal ranges between 150,000 to 450,000 platelets per microliter 1. Symptoms may include easy bruising, prolonged bleeding from cuts, nosebleeds, bleeding gums, blood in urine or stool, or tiny red spots on the skin called petechiae.

Causes and Treatment

The causes of low platelets can be due to decreased production in bone marrow, increased destruction, or increased consumption 1. Treatment depends on the cause and severity, ranging from monitoring mild cases to medications like corticosteroids, immune globulin, or thrombopoietin receptor agonists for more severe cases. In emergencies with very low counts, platelet transfusions may be necessary, as supported by the European guideline on management of major bleeding and coagulopathy following trauma: sixth edition 1.

Importance of Monitoring

Regular follow-up blood tests are important to monitor platelet levels and treatment effectiveness. It is crucial to note that a low platelet count has been consistently associated with both morbidity and mortality, especially in trauma patients 1. Therefore, prompt medical evaluation and management are essential to prevent complications and improve quality of life.

From the Research

Laboratory Result of Lacking Normal Platelet Count

A laboratory result of lacking normal platelet (Lac nt platelet) count refers to a condition where the platelet count is less than the normal range.

  • The normal platelet count range is typically considered to be between 150,000/μL and 450,000/μL 2, 3.
  • A platelet count less than 150,000/μL is defined as thrombocytopenia, which can be caused by decreased platelet production, sequestration of platelets, or increased destruction of platelets 2.
  • Thrombocytopenia can be acute or chronic, congenital or acquired, and can be associated with life-threatening bleeding and thrombotic complications 3.

Possible Causes of Thrombocytopenia

The causes of thrombocytopenia are varied and can include:

  • Infections 2, 4
  • Malignancy 2
  • Liver disease 2
  • Autoimmune disorders 2
  • Disseminated intravascular coagulation 2
  • Pregnancy 2
  • Medications 2
  • Coagulation disorders 2
  • Immune thrombocytopenia, as seen in some cases of COVID-19 4

Diagnosis and Evaluation

The diagnosis and evaluation of thrombocytopenia involve a comprehensive history and physical examination, as well as laboratory tests such as:

  • Platelet count 5, 3
  • Peripheral blood smear 5
  • Platelet function screening test 5
  • Bone marrow aspiration 4
  • Testing for platelet function and disorders, which can be challenging for clinical laboratories due to the variability in diagnostic test procedures 6

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Thrombocytopenia.

Critical care nursing clinics of North America, 2013

Research

Immune thrombocytopenia in a patient with COVID-19.

International journal of hematology, 2020

Research

The laboratory diagnosis of platelet disorders.

Archives of pathology & laboratory medicine, 2002

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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