➢What is hematological test
➢Parts Of Hematology Analyzer
What is hematological test?
• Hematology is the science or study of blood and blood diseases. In the medical
field, hematology includes the treatment of blood disorders and malignancies,
including types of hemophilia, blood clots, leukemia, lymphoma, myeloma and
sickle-cell anemia. Hematology is a branch of internal medicine that deals with the
physiology, pathology, etiology, diagnosis, treatment, prognosis and prevention
of blood-related disorders.
• Hematology analyzers are used to count and identify blood cells at high
speed and accuracy.
• These are computerized, highly specialized and automated machines
• Features vary from one hematology analyzer to another, such as closed vial
testing and open sampling testing.
Other features to consider in a hematology analyzer are:-
❖ sample size required
❖ type and quantity of testing modes
❖ speed in which the results are available
❖ automatic flagging of results that are out of normal range
❖ the capacity of test results it can store.
Parts Of Hematology
❖ Control Unit: The control unit is the main part of the hematology analyzer that is calibrated
from time to time and is responsible for the precision of the device
❖ Function Keys: Helps to give the command and set the required values or change the
settings of the machine.
❖ Monitor Interface: Displays the values obtained and the drawn comparisons. Any
abnormality in the values is first indicated here.
❖ Cover: An easy-to-open hinge cover is placed on the top, covering the control unit to
prevent contamination and damage.
❖ Sample stand/ Touch plate: This is where the samples are placed for testing.
❖ LED Lights: Indicated the status of the machine
✓ A hematology analyzer: is a device used to
measure various properties of a blood sample
such as hemoglobin, red blood cells, white
blood cells, platelets, and other blood
components. The analyzer works by passing the
sample through a series of sensors and detectors
that measure the properties of the sample. The
data is then analyzed by a computer and the
results are displayed on a monitor. The device is
typically used in medical laboratories to aid in
diagnosing diseases and other medical
• .The results of a hematology analyzer
can provide information about a variety
of blood components, including red and
white blood cells, hemoglobin, and
platelets.This data can help a doctor
diagnose various conditions, such as
anemia, infection, or cancer
1. Hematology analyzer: The most important of this analyzer is the blood
cell analysis (blood routine).
2. Semi-automatic/automatic biochemical analyzer: This kind of
biochemical analyzer does biochemical tests, such as: liver function,
kidney function, blood glucose and lipids, etc.
3. Electrolyte analyzer: this analyzer does electrolyte testing, including
potassium, sodium, chloride, calcium, etc.
4. Hemocoagulometer: this analyzer is to do PT, APTT, TT, FBI and other
blood coagulation items.
5. Enzyme standard instrument: qualitative / semi-quantitative
immunoassay: hepatitis B and half, hepatitis C antibody, HIV antibody...
6. Chemiluminescence analyzer: immuno-quantitative, including the
detection of T3, T4, TSH, hormones, tumor markers, etc.
7. Radioimmunoassay analyzer: the same as above, because of radioactive
waste, has been gradually replaced by chemiluminescent immunoassay
8. Blood gas analyzer: blood gas analysis, mainly including partial
pressure of oxygen, partial pressure of carbon dioxide, etc.
9. Blood vertebrate viscometer: blood rheology: high, medium and low
whole blood/plasma viscosity
10. PH meter: blood pH: most blood gas analyzers also have this function
➢RBC distribution width
➢Mean corpuscular volume
➢Mean corpuscular hemoglobin
➢WBC differential count in percentage and absolute value
➢Platelet distribution width
➢Platelet mean volume
➢Large platelet cell ratio
Advantages of Hematology
• Speed with efficient handling of a large number of samples.
• Accuracy and precision in quantitative blood tests.
• Ability to perform multiple tests on a single platform.
• Significant reduction of labor requirements.
• Invaluable for accurate determination of red cell indices.
Disadvantages of Hematology
• Flags: Flagging of a laboratory test result demands labor-intensive
manual examination of a blood smear.
• Comments on red cell morphology cannot be generated. Abnormal
red cell shapes (such as fragmented cells) cannot be recognized.
• Erroneously increased or decreased results due to interfering
• Expensive with high running costs.