GI

Question 1

Amylase

Answer 1

30- 100 U/L

• Pancreatic enzyme
• Helps digestion of starches (carbs)
• Remains elevated for longer period than amylase (pancreatitis)

Question 2

Lipase

Answer 2

adult: <200 U/L

• Pancreatic enzyme
• Digestion of fats

Question 3

Bilirubin

Answer 3

Total 0.2-1.2 mg/dL

• Produced by liver
• Hemolysis of old RBCs

Question 4

Conjugated Bilirubin (direct)

Answer 4

0.1-0.4 mg/dL

Question 5

Unconjugated Bilirubin (Indirect)

Answer 5

0. 4-1.1 mg/dL

- Jaundice d/t high levels of bilirubin, visible when serum is >2 mg/dL

Question 6

Albumin

Answer 6

3. 5 - 5.5 g/dL

- Protein found in plasma

Question 7

Prealbumin

Answer 7

15 - 36 mg/dL

• Protein made in liver
• helps make other proteins
• Can assess effectiveness of TPN
• Assessing nutritional status

Question 8

Ammonia

Answer 8

10-80 mcg/dL

• Byproduct of broken down (metabolized) proteins
• ammonia in blood, liver changes to urea, kidneys remove through urine
• ex: lactulose

Question 9

Aspartate Aminotransferase (AST)

Answer 9

0 - 35 U/L

• Helps metabolize amino acids
• AST must be taken with ALT

Question 10

Alanine Aminotransferase (ALT)

Answer 10

0 -48 U/L

• Enzyme found in liver/kidneys
• More specific indicator or liver function