[7] Gastrointestinal Function Tests Flashcards
Function: Salivary Tests
- Measuring levels of steroids
- Diagnosis of Viral Infections through PCR
- Detection of Bacterial Infections
Define: Alanine Aminotransferase (ALT) Test
Formerly: Serum Glutamate-Pyruvate Transaminase (SGPT)
Specific indicator for liver injur1y since ALT is found in the cytosol
Define: Aspartate Aminotransferase (AST) Test
Formerly: Serum Glutamic-Oxaloacetic Transaminase (SGOT)
Non-specific indicator for liver injury since it is also found in liver, heart, muscle, and kidney
Define: Alkaline Phosphatase Test
Non-specific liver injury test since it is produced in bones as well
When would Alkaline Phosphatase be abnormal
Obstructed Bile Duct (Cholestasis)
Differentiate Direct and Indirect Bilirubin
D: Conjugated, Water-Soluble
I: Unconjugated, Water-Insoluble
When is Direct Bilirubin Abnormal?
Choledocholithiasis and Biliary Atresia
When is Indirect Bilirubin Abnormal?
Hemolytic Anemia and Breastmilk Jaundice
At what ratio Direct:Indirect Bilirubin can a patient be considered Choleestatic?
> 20%
Where can you find Gamma-Glutamyl Transpeptidase?
What induces it?
What do elevated levels indicate?
- Canalicular Domain of Hepatocytes
- Alcohol Intake
- Chronic Alcohol Consumption
Function: Albumin Test
Measure of the synthetic function of the liver
Define: Prothrombin Time Test
Measure of the synthetic function of the liver
Introduces potassium to the patient where unresponsiveness indicates severe liver disease
What do low albumin levels after administering Potassium indicate?
Liver Failure
When would cholesterol levels be elevated?
Patients with prolonged Cholestasis
Amylase would be elevated in what span of time?
Hours of onset of acute pancreatitis and remain elevated for 3-5 days
