Normal Lab Values

Question 1

RBC

Answer 1

Male: 4.7-6.6 million
Female: 4.2-5.4 million

Question 2

WBC

Answer 2

5,000-10,000 cells/ml

Critical <2,000 or > 40,000

Question 3

Hemoglobin

Answer 3

Male 14-18 g/dL

Female 12-16g/dL

Question 4

Hematocrit

Answer 4

Male 42-52%

Female 37-47%

Question 5

Platelets

Answer 5

> 150,000-400,000

Critical: <50,000 or > 1 million

Question 6

Sodium

Answer 6

136-145 mEq/L

Critical: <120 or >160

Question 7

Potassium

Answer 7

3.5-5.0 mEq/L

Critical: <3 or >6.1

Question 8

Chloride

Answer 8

98-106 mEq/L

Question 9

Calcium

Answer 9

9-10.5 mg/dL

Question 10

Magnesium

Answer 10

1.3-2.1 mEq/L

Question 11

Phosphorous

Answer 11

3-4.5 mg/dL

Question 12

Glucose

Answer 12

Fasting: 70-110 mg/dL
Random: <200 mg/dL
Critical: Male <50 or >400
Female <40 or > 400

Question 13

BUN

Answer 13

10-20 mg/dL

Critical: >100

Question 14

Creatinine

Answer 14

Male 0.6-1.2 mg/dL
Female 0.5 - 1.1 mg/dL
Critical: > 4

Question 15

Total protein

Answer 15

6.4-8.3 g/dL

Question 16

ALT

Answer 16

4-36 international units/ L

Question 17

AST

Answer 17

0-35 units / L

Question 18

pH

Answer 18

7.35-7.45

Critical <7.25 or > 7.6

Question 19

pCO2

Answer 19

35-45 mmHg

Critical <20 or > 60

Question 20

pO2

Answer 20

80-100 mmHg

Critical < 40 (arterial)

Question 21

HCO3

Answer 21

21-28 mEq/L

Critical < 10 or > 40

Question 22

SaO2

Answer 22

95-100%

Critical <75%

Question 23

PT

Answer 23

11-12.5 seconds

with anticoagulation therapy: >1.5-2 time the control

Question 24

INR

Answer 24

0.8-1.1
2-3 (A-Fib anticoagulant therapy)
3-4 (prosthetic valve prophylaxis

Question 25

aPTT

Answer 25

30-40 seconds

1.5 - 2.5 times control wit anticoagulation therapy

Question 26

Urine specific gravity

Answer 26

1.005 - 1.030

Question 27

Hgb A1C

Answer 27

Non-diabetic: 4-5.7%
Good diabetic control <7%
Poor diabetic control >9%