Clinical Laboratory Science

The clinical lab team analyzes specimens to support diagnosis.

• Roles include medical laboratory scientist, technician, and pathologist.
• Labs are divided into departments (hematology, chemistry, microbiology, etc.).
• Quality control ensures accurate, reliable results.
• Professional certification and standards govern the field.

Lab safety protects workers from biological and chemical hazards.

• Follow standard precautions and use PPE.
• Biosafety levels (BSL 1–4) match the risk of the agent.
• Know bloodborne pathogen rules and proper waste disposal.
• SDS sheets and labeling guide chemical safety.

Accurate math underlies reliable lab work.

• Use the metric system, dilutions, and concentrations.
• Calculate percent solutions and molarity.
• Understand means, ranges, and standard deviation for quality control.
• Precision and significant figures matter.

Hematology studies blood cells; hemostasis studies clotting.

• The CBC counts red cells, white cells, and platelets.
• Anemia, leukemia, and clotting disorders are detected here.
• Hemostasis involves platelets and the coagulation cascade.
• Tests include PT/INR and PTT for clotting function.

Immunology examines the body's defense system.

• The immune system uses antibodies and antigens to fight pathogens.
• Innate immunity is general; adaptive immunity is specific.
• Tests detect antibodies, autoimmune markers, and blood types.
• Immunoassays (e.g., ELISA) are widely used.

Urinalysis screens for many diseases through urine testing.

• Includes physical (color, clarity), chemical (dipstick), and microscopic exams.
• Detects glucose, protein, blood, ketones, and infection.
• Findings can indicate diabetes, kidney disease, or UTIs.
• Proper collection prevents contamination.

Clinical chemistry measures substances in blood and body fluids.

• Common tests: glucose, electrolytes, BUN/creatinine, and liver enzymes.
• Lipid panels assess cardiovascular risk.
• Analyzers and reference ranges guide interpretation.
• Results help diagnose and monitor many conditions.

Microbiology identifies pathogens to guide treatment.

• Culture and sensitivity grows organisms and tests antibiotics.
• Gram staining classifies bacteria as positive or negative.
• Identifies bacteria, fungi, and viruses causing infection.
• Results guide targeted antimicrobial therapy.

Parasitology identifies parasites that cause disease.

• Parasites include protozoa, helminths (worms), and arthropods.
• Ova and parasite (O&P) exams check stool samples.
• Examples: malaria (Plasmodium), giardia, and tapeworms.
• Identification guides treatment and prevention.