Urinalysis & Body Fluids Analysis
Urinalysis involves examining the physical, chemical, and microscopic properties of urine to assess kidney health, detect infections, and identify metabolic conditions. Key components of urinalysis include:
1. Physical Examination: Assesses color, clarity, and odor of the urine. Changes in these may indicate dehydration, infection, or presence of blood.
2. Chemical Analysis: Common chemical tests measure pH, protein, glucose, ketones, bilirubin, and urobilinogen levels. Specific tests can indicate:
• Glucose: High levels suggest diabetes.
• Protein: Proteinuria may indicate kidney damage or disease.
• Ketones: High levels can occur in uncontrolled diabetes, starvation, or low-carbohydrate diets.
• pH: Abnormal pH levels can indicate infection, kidney stones, or metabolic imbalances.
3. Microscopic Examination: Identifies cells, bacteria, crystals, and casts in urine sediment.
• Red Blood Cells (RBCs): Presence may indicate kidney stones, infection, or trauma.
• White Blood Cells (WBCs): Suggests inflammation or infection.
• Bacteria: Indicates a urinary tract infection (UTI).
• Casts: Tube-shaped proteins formed in the kidneys that can suggest kidney disease or infection.
Body fluids like cerebrospinal fluid (CSF), synovial fluid, pleural fluid, peritoneal fluid, and pericardial fluid can also be analyzed for diagnostic purposes:
1. Cerebrospinal Fluid (CSF): Analysis helps diagnose central nervous system infections, bleeding, multiple sclerosis, and malignancies.
• Cell count: Elevated WBCs indicate infection.
• Glucose and protein levels: Abnormal levels may indicate infection or blood-brain barrier issues.
• Microbiology: Detects bacterial, viral, or fungal infections.
2. Synovial Fluid: Joint fluid analysis helps diagnose arthritis, gout, and infections.
• Crystals: Uric acid crystals suggest gout, while calcium pyrophosphate crystals suggest pseudogout.
• Cell count and type: High WBCs indicate inflammation or infection.
3. Pleural, Peritoneal, and Pericardial Fluids: Analysis can diagnose infections, malignancies, and inflammatory diseases.
• Appearance: Cloudy fluid can indicate infection, while bloody fluid may suggest trauma or malignancy.
• Chemistry tests: LDH, protein, glucose, and pH can indicate inflammatory or infectious processes.