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Question 1

What is the normal range for adult hemoglobin (Hgb) levels?

Answer 1

13.5 to 17.5 grams per deciliter (g/dL) for males; 12.0 to 15.5 g/dL for females.

Question 2

What is the normal range for adult white blood cell (WBC) count?

Answer 2

4,500 to 11,000 cells per microliter (cells/µL).

Question 3

What is the normal range for platelet count?

Answer 3

150,000 to 450,000 platelets per microliter (platelets/µL).

Question 4

What is the normal range for serum sodium (Na+) levels?

Answer 4

135 to 145 milliequivalents per liter (mEq/L).

Question 5

What is the normal range for serum potassium (K+) levels?

Answer 5

3.5 to 5.0 mEq/L.

Question 6

What is the normal range for serum chloride (Cl-) levels?

Answer 6

98 to 106 mEq/L.

Question 7

What is the normal range for serum bicarbonate (HCO3-) levels?

Answer 7

22 to 28 mEq/L.

Question 8

What is the normal range for blood urea nitrogen (BUN) levels?

Answer 8

7 to 20 milligrams per deciliter (mg/dL).

Question 9

What is the normal range for serum creatinine levels?

Answer 9

0.6 to 1.2 mg/dL.

Question 10

What is the normal range for fasting blood glucose levels?

Answer 10

70 to 99 milligrams per deciliter (mg/dL).

Question 11

What is the normal range for total cholesterol levels?

Answer 11

Less than 200 mg/dL.

Question 12

What is the normal range for triglyceride levels?

Answer 12

Less than 150 mg/dL.

Question 13

What is the normal range for low-density lipoprotein (LDL) cholesterol?

Answer 13

Less than 100 mg/dL.

Question 14

What is the normal range for high-density lipoprotein (HDL) cholesterol?

Answer 14

40 to 60 mg/dL or higher.

Question 15

What is the normal range for arterial blood gas (ABG) pH?

Answer 15

7.35 to 7.45.

Question 16

What is the normal range for arterial blood gas (ABG) partial pressure of carbon dioxide (PaCO2)?

Answer 16

35 to 45 mmHg.

Question 17

What is the normal range for arterial blood gas (ABG) partial pressure of oxygen (PaO2)?

Answer 17

75 to 100 mmHg.

Question 18

What is the normal range for arterial blood gas (ABG) bicarbonate (HCO3-) levels?

Answer 18

22 to 26 mEq/L.

Question 19

What is the normal range for international normalized ratio (INR) for patients on anticoagulation therapy?

Answer 19

2.0 to 3.0.

Question 20

What is the normal range for activated partial thromboplastin time (aPTT)?

Answer 20

30 to 40 seconds.

Question 21

What is the normal range for prothrombin time (PT)?

Answer 21

11 to 13.5 seconds.

Question 22

What is the normal range for serum calcium (Ca2+) levels?

Answer 22

8.5 to 10.2 mg/dL.

Question 23

What is the normal range for serum magnesium (Mg2+) levels?

Answer 23

1.7 to 2.2 mg/dL.

Question 24

What is the normal range for serum phosphate (PO4) levels?

Answer 24

2.5 to 4.5 mg/dL.

Question 25

What is the normal range for serum albumin levels?

Answer 25

3.5 to 5.0 g/dL.

Question 26

What is the normal range for total bilirubin levels?

Answer 26

0.1 to 1.2 mg/dL.

Question 27

What is the normal range for alkaline phosphatase (ALP) levels?

Answer 27

44 to 147 IU/L.

Question 28

What is the normal range for alanine aminotransferase (ALT) levels?

Answer 28

7 to 56 IU/L.

Question 29

What is the normal range for aspartate aminotransferase (AST) levels?

Answer 29

10 to 40 IU/L.

Question 30

What is the normal range for C-reactive protein (CRP)?

Answer 30

Less than 3.0 mg/L.

Question 31

What is the normal range for D-dimer levels?

Answer 31

Less than 0.5 mg/L.

Question 32

What is the normal range for ferritin levels?

Answer 32

12 to 300 ng/mL for males; 12 to 150 ng/mL for females.

Question 33

When / Why is a AFP (alpha feto-protein) Tested in pregnancy?

Answer 33

15-22 weeks neural tube defects and down syndrome (chromosomal abnormalities)