Leukocytes
Bone Marrow Process
Reference Ranges
Hematopoiesis Organs
Hematology Testing
100

The thymus is the maturation site for this type of leukocyte.

What are T-lymphocytes?

100

This organ is the primary site for hematopoiesis in adults.

What is the bone marrow?

100

Measured laboratory values must be compared to this in order to determine if the values are within normal limits or abnormal.

What is a reference range?

100

This organ is the primary site of hematopoiesis in a 5 month old fetus.

What is the liver?

100

This is the most commonly used hematology screening test.

What is a CBC?

200

This leukocyte is the most predominate mature circulating leukocyte in infants.

What is Lymphocyte?

200

These cells give rise to all bone marrow cells.

What are Hematopoietic Stem cells (HSC)?

200

A value that is outside of the reference range is considered to be this type of value.

What is abnormal?

200

The process by which the spleen removes damaged erythrocytes from peripheral circulation.

What is culling?

200

A type of initial broad-based testing ordered by clinicians to determine if a pathological process is present.

What are screening tests?

300

This class of hematopoietic cells gives rise to the lymphoid and myeloid cells.

What are Multipotential progenitor cells?

300

This term is used to describe a bone marrow that produces an excess number of blood cells.

What is a hyperplastic marrow?

300

This population in individuals frequent has significant variations from adult reference intervals.

What are newborns?

300

The largest collection of lymphocytes and macrophages are located in this organ.

What is the spleen?

300

A phlebotomist collects blood from a patient and mislabels the specimen.  This is an example of a failure in this phase of testing.

What is pre-examination phase?

400

These two important cell structures are critical in evaluating morphology, classification, and determining the stage of maturation.

What is the nucleus and cytoplasm?

400

These cells control the volume of the bone marrow.

What are adipocytes?

400

Laboratory values in this range are considered to be life threatening.

What are critical values/ranges?

400

Inflammation, infections and malignancies can cause this condition in your lymph nodes.

What is lymphadenopathy?

400

This test is used to classify types of leukocytes.

What is a differential?

500

The CFU-GEMM gives rise to this type of progenitor cells.

What are myeloid progenitor cells?

500

This class of hematopoietic cells has the ability to self-renew.

What are Hematopoietic stem cells (HSC)?

500

This cellular component has the highest reference range on a CBC.

What are erythrocytes?

500

The condition by which blood cells are produced outside of the bone marrow resulting in splenomegaly.

What is Extramedullary hematopoiesis?

500

An abnormal RBC count could result in a reflex of this test which is not included in a standard CBC.

What is a reticulocyte count?

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