GI Serum Tests Flashcards

Memorizing Lab Values

1
Q

Calcium Total Normal Range

A

9.0-10.5 mg/dL

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2
Q

Low Calcium Significance

A

Malabsorption, Renal Failure, Acute Pancreatitis

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3
Q

Potassium

A

3.5-5.0 mmol/L

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4
Q

Low K+ Significance

A

vomiting, gastric suction, diarrhea, drainage from intestinal fistula

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5
Q

Albumin

A

3.5-5.0 g/dL

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6
Q

Low Albumin Significance

A

Hepatic disease

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7
Q

ALT alanine aminotransferase

A

3-35 iu or 8-20 u/L

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8
Q

High ALT

A

liver disease, hepatitis, Cirrhosis

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9
Q

AST Aspartate Aminotransferase

A

5-40 units/L

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10
Q

Alkaline Phosphatase

A

30-85 iu/L or 42-128 units

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11
Q

High Alkaline Phosphatase

A

hepatic disease, biliary obstruction

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12
Q

Bilirubin TOTAL

A

0.1-1.0 mg/dL

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13
Q

Bilirubin (Conjugated)

A

0.1-0.3 mg/dL

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14
Q

High Bilirubin (total)

A

Hemolysis, biliary obstruction, hepatic damage

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15
Q

Bilirubin (Unconjugated)

A

0.2-0.8 mg/dL

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16
Q

high Bilirubin (Unconjugated)

A

hemolysis, hepatic damage

17
Q

Ammonia

A

15-110 mg/dL

18
Q

high Ammonia

A

hepatic disease- cirrhosis

19
Q

Xylose absorption

A

5-g dose in 2 hr- >20 mg/dL or >1.3 mmol/L

20
Q

low Xylose

A

malabsorption in the small intestine

21
Q

Serum amylase

A

56-90 i/u or 25-125 units/L

22
Q

high serum amylase and lipase

A

acute pancreatitis

23
Q

Serum lipase

A

0-110 units/L

24
Q

Cholesterol

A

<200 mg/dL

25
Q

High Cholesterol

A

pancreatitis, biliary obstruction,

26
Q

Low Cholesterol

A

liver cell damage

27
Q

CA 19-9 Carbohydrate Antigen

A

< 37 units/mL

28
Q

High CA 19-9

A

cancer of pancreas, stomach, or colon. Acute pancreatitis, inflammatory bowel disease

29
Q

CEA carcinoembryonic antigen

A

Nonsmoker- < 2.5 ng/mL

Smoker- < 5 ng/mL

30
Q

High CEA

A

colorectal, stomach, or pancreatic cancer. Ulcerative colitis, Crohn’s disease, Hepatitis, Cirrhosis