Anatomical and Clinical Pathology Overview

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary role of the specimen collection and processing department?

Storing specimens for long-term analysis

Only handling specimens from outpatient locations

Collecting, evaluating, and preparing laboratory specimens for testing (correct)

Performing all laboratory tests directly on-site

Who is primarily responsible for performing phlebotomy in a hospital setting?

Doctors and nurses exclusively

Only Medical Laboratory Scientists (MLSs)

Medical Laboratory Technicians (MLTs), phlebotomists, and Medical Laboratory Assistants (MLAs) (correct)

Patients, as a part of their own care

What is phlebotomy more commonly known as?

Specimen storage

Venipuncture (correct)

Blood collection only

Blood transfusion

What is done to the blood sample after it is collected from a patient?

It is drawn into tubes with additives appropriate for specific tests Signup and view all the answers

Which location is NOT typically associated with specimen collection?

The clinical laboratory itself Signup and view all the answers

What is the primary function of the anatomical pathology laboratory?

To prepare and analyze tissue samples for diagnosis Signup and view all the answers

Which professional is primarily responsible for interpreting tissue slides in the laboratory?

Pathologist Signup and view all the answers

What crucial information does the pathology laboratory determine regarding cancer?

The presence, severity, and extent of cancer Signup and view all the answers

Which section of the anatomy pathology laboratory is responsible for receiving and sectioning patient tissues?

Gross pathology Signup and view all the answers

What does the term 'grade' refer to in the context of cancer diagnosis?

The differentiation level of cancer cells Signup and view all the answers

What personal safety equipment is essential for professionals working in a pathology laboratory?

Personal protective equipment (PPE) Signup and view all the answers

In which area of the pathology laboratory are microscopes and digital viewing equipment primarily found?

Histology area Signup and view all the answers

Which of the following tasks is performed by pathologists' assistants in the laboratory?

Dissecting tissue specimens Signup and view all the answers

What type of testing is performed using a light blue top tube?

Coagulation testing Signup and view all the answers

Which tube top color is used for chemistry testing, including the BMP?

Green Signup and view all the answers

What is the primary purpose of a speckle top tube?

Serum separator for chemistry tests Signup and view all the answers

Which testing is NOT included for the pink top tube?

HIV tests Signup and view all the answers

How are most urine specimens typically classified?

Random specimens Signup and view all the answers

What is the initial step in the flow of a patient specimen from collection to results?

Specimen collection Signup and view all the answers

In what stage is a specimen confirmed for integrity?

After accessioning Signup and view all the answers

Which tube type is specifically used for testing the lipid panel?

Speckle top Signup and view all the answers

What is the primary function of a clinical laboratory?

Process and analyze blood and body fluid specimens Signup and view all the answers

Who typically orders laboratory tests in a clinical laboratory?

Physicians and other healthcare providers Signup and view all the answers

Who are the highly trained professionals that staff the clinical laboratory?

Medical laboratory scientists and technicians Signup and view all the answers

What do medical laboratory scientists (MLS) in a clinical laboratory typically specialize in?

Working in all departments or specializing in a specific department Signup and view all the answers

Which of the following statements is true about the clinical laboratory?

Blood products are prepared for transfusion within the laboratory. Signup and view all the answers

What is the role of a medical laboratory technician (MLT) compared to a medical laboratory scientist (MLS)?

MLTs perform laboratory tests under the supervision of MLS. Signup and view all the answers

What distinguishes medical laboratory scientists (MLS) from generalists in a clinical laboratory?

Generalists rotate between departments of the laboratory. Signup and view all the answers

What is the main purpose of laboratory tests conducted in a clinical laboratory?

To assist in the diagnosis, treatment, and management of patients. Signup and view all the answers

What does total cholesterol measure?

Cholesterol in all lipoprotein particles Signup and view all the answers

Which of the following is known as 'good cholesterol'?

HDL Signup and view all the answers

What is the risk associated with elevated LDL levels?

Higher risk of atherosclerosis Signup and view all the answers

What is the first step in urinalysis?

Visual inspection of the urine specimen Signup and view all the answers

If urine is cloudy or turbid before sitting, what does it likely indicate?

Presence of infection Signup and view all the answers

Therapeutic drug monitoring (TDM) is primarily used to:

Measure peak and trough drug levels Signup and view all the answers

Which analyte is NOT part of the lipid panel?

Creatinine Signup and view all the answers

What characteristic of normal healthy urine is NOT true?

Always has a foul odor Signup and view all the answers

Study Notes

Anatomical Pathology Laboratory

The anatomical pathology laboratory is where tissue specimens from surgeries, biopsies, cytological procedures, frozen sections, and autopsies are analyzed.
Pathologists, specialized physicians, interpret tissue slides under a microscope to make diagnoses.
The laboratory is divided into areas for gross pathology, frozen sections, histology, cytology, and autopsies.
Within the gross pathology lab, patient tissues are received, described, and sectioned for microscopic examination.

Clinical Laboratory

The clinical laboratory analyzes blood, body fluids, and other specimens.
It is staffed by medical laboratory scientists (MLS) and medical laboratory technicians (MLT).
The clinical laboratory prepares blood products for transfusion.

Staff of the Clinical Laboratory

Medical laboratory science is the health profession that educates people to perform laboratory tests on patient blood and other specimens.
MLSs are trained to work in all departments of the clinical laboratory, but may specialize in one department or rotate between departments.
MLSs that rotate between departments are known as generalists.

Clinical Laboratory - Specimen Collection and Processing

The specimen collection and processing department receives, accessioned, evaluates, and prepares specimens for testing.
Most specimens are collected in hospital wards, ICUs, emergency departments, and other inpatient and outpatient locations.
The department is staffed by MLTs, phlebotomists, and MLAs.

Phlebotomy

Phlebotomy, or venipuncture, is the process of drawing blood from a patient's vein.
A tourniquet is applied and a needle is inserted into a vein of the antecubital fossa, forearm, or back of the hand.
Blood is drawn into tubes containing various additives, such as anticoagulants or clot activators, depending on the test being performed.

Blood Tube Color Coding

Light blue top: coagulation testing (prothrombin time and aPTT)
Lavender top: hematology testing (complete blood count)
Speckle top (Serum Separator Tube): chemistry testing (lipid panel)
Red top: chemistry, immunology, and transfusion services testing (hepatitis and HIV tests)
Green top: chemistry testing (basic metabolic panel)
Gold top: chemistry, immunology, and serology testing
Pink top: transfusion services testing (ABO and Rh blood typing)

Urine Specimen Collection

Most urine specimens are random specimens, collected without a designated time.
Some urine tests require specimens to be collected at specific times, such as first in the morning.

Clinical Laboratory - Specimen Processing

After accessioning and confirming specimen integrity, staff may perform additional processing, such as centrifugation.
Prepared specimens are sent to the appropriate laboratory department for testing.

Flow of a Patient Specimen from Collection to Results

Specimen is collected in a hospital ward, outpatient collection area, or physician office.
Specimen is received in the specimen collection and processing department of the clinical laboratory.
Specimen is accessioned, evaluated for urgency, and prepared for testing.
Specimen is sent to the appropriate laboratory department for analysis.
Results are reviewed by a pathologist or MLS.
Results are reported to the ordering physician or healthcare provider.

Clinical Chemistry Laboratory

The clinical chemistry laboratory tests blood and urine for chemical components.
Examples of tests performed in the chemistry lab include:
- Lipid Panel: measures total cholesterol, HDL, LDL, and triglycerides.
- Basic Metabolic Panel (BMP): measures electrolytes, glucose, kidney function, and liver function.
- Therapeutic Drug Monitoring (TDM): determines optimal drug concentration by analyzing peak and trough levels.

Clinical Laboratory - Urinalysis

The urinalysis department examines urine visually, chemically, and microscopically.
The first step in urinalysis is visual inspection for color and clarity.
The second step in urinalysis is chemical examination using a urine test strip known as a dipstick or instrumentation.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers key concepts in anatomical and clinical pathology laboratories. Learn about the roles of pathologists and medical laboratory scientists, and explore the different areas of laboratory work including histology and cytology. Test your knowledge on the procedures involved in analyzing tissue and fluid specimens.