Need to Know Lab Values

Question 1

Na+

Answer 1

135 - 145 mEq/L

Question 2

K+

Answer 2

3.5 - 5.3 mEq/L

Question 3

Ca++

Answer 3

8.5 - 10.6

ionized Ca++: 4.5 - 5.2 mEq/L

Question 4

Cl-

Answer 4

98 - 107 mEq/L

Question 5

Mg+

Answer 5

1.5 - 2.5 mEq/L

Question 6

PO4

Answer 6

2.5 - 4.5 mEq/L

Question 7

DEADLY LABS (5)

Answer 7

• pH: in the 6’s
• K+: 6+
• CO2: in the 60’s
• PO2: 60’s and under
• Platelets: below 40,000

Question 8

Gastric pH

Answer 8

Equal or less than 4

Question 9

Respiratory secretion pH

Answer 9

> 5.5

Question 10

Urine pH

Answer 10

4.5 - 8

Question 11

Blood pH (arterial)

Answer 11

7.35 - 7.45

Question 12

Urine specific gravity

Answer 12

1.010 - 1.030

Question 13

Urine specific gravity

indicates fluid overload

Answer 13

1.008

Question 14

SaO2 (normal)

Answer 14

95 - 98%

Question 15

SaO2 (emergency)

Answer 15

Less than 86%

Question 16

SaO2 (life-threatening)

Answer 16

Less than 70%

Question 17

Low pH / High PaCO2

Answer 17

Respiratory Acidosis

Question 18

High pH / Low PaCO2

Answer 18

Respiratory Alkalosis

Question 19

Low pH / Low HCO3

Answer 19

Metabolic Acidosis

Question 20

High pH / High HCO3

Answer 20

Metabolic Alkalosis

Question 21

PaCO2

Answer 21

35 - 45 mm/Hg

Question 22

HCO3

Answer 22

22 - 26 mEq/L

Question 23

PaO2

Answer 23

78 - 100 mm/Hg

Question 24

Central venous pressure (CVP)

Answer 24

3 - 12 cm/H2O

Question 25

CVP (hypovolemia)

Answer 25

Less than 3%

Question 26

CVP (hypervolemia or poor cardiac contractility)

Answer 26

> 12 cm/H2O

Question 27

Lead

Answer 27

Less than 9 mcg

Question 28

Ammonia

Answer 28

15 - 45 mcg/dL

Question 29

Creatinine clearance

Answer 29

1.67 -2.6 mL/sec

Question 30

Creatinine (adult)

Answer 30

0.7 - 1.4 mg/dL

Question 31

Creatinine (child)

Answer 31

0.4 - 1.2 mg/dL

Question 32

Blood Urea Nitrogen (BUN)

Answer 32

7 - 18 mg/dL

“Think 8 - 30”

Note: if elevated**

• *check for DEHYDRATION
• *give fluids :)

Question 33

BUN (> 60 yrs)

Answer 33

18 - 20 mg/dL

Question 34

Glycosylated Hgb (HgbA1c)

Answer 34

4 - 6%

Question 35

Albumin

Answer 35

3.5 - 5.5 g/dL

Question 36

Prealbumin

Answer 36

15 - 36 mg/dL

Question 37

Cholesterol

Answer 37

Less than 200 mg/dL

Question 38

Glucose Tolerance Test (GTT)

Answer 38

Fasting: 60 - 110 mg/dL
1 hr: 190
2 hr: 140
3 hr: 125

Question 39

LDL

Answer 39

Less than 139 mg/dL

Question 40

HDL

Answer 40

Men: 35 - 70 mg/dL
Women: 35 - 85 mg/dL

Question 41

Amylase

Answer 41

6 - 160 U/dL

Question 42

Lipase

Answer 42

Less than 200 m/ul

Question 43

LDH (lactate)

Answer 43

100 - 225 u/L

Question 44

Hct %

Answer 44

Men: 42 - 52 %
Women: 35 - 47 %
Children: 35 - 45 %

Question 45

Hgb (g/dL)

Answer 45

“Think: 12 - 18”
Men: 13 - 18
Women: 12 - 16
Children: 11 - 12.5

Question 46

RBC (mm3)

Answer 46

“Think 4 - 6 million”
M: 4.6 - 6.2
W: 4.2 - 5.4
C: 3.5 - 5.2

Note: if LOW**
**Assess for BLEEDING

Question 47

WBC (mm3) Total

Answer 47

“Think: 5,000 - 11,000”
M: 5,000 - 10,000
W: 5,000 - 10,000
C: 5,000 - 13,000

Question 48

Platelets

Answer 48

150,000 - 400,000 mm3

Question 49

PT

Answer 49

9.5 - 12 sec

for Coumadin effectiveness

Question 50

PTT

Answer 50

20 - 39 sec

for Heparin effectiveness

Question 51

Sed rate

Answer 51

Male: 0 - 15 mm/h
Female: 0 - 25 mm/h

Question 52

AST (SGOT)

Answer 52

8 - 40 u/L

Question 53

ALT (SGPT)

Answer 53

8 - 40 u/L

Question 54

Bilirubin Total

Answer 54

0.3 - 1 mg/dL

Question 55

Bilirubin

Indirect (unconjugated)

Answer 55

0.2 - 0.8 mg/dL

Question 56

Bilirubin

Direct (conjugated)

Answer 56

0.1 - 0.3 mg/dL

Question 57

Bilirubin

Newborn

Answer 57

1 - 12 mg/dL

>15 is critical

Question 58

INR

Answer 58

2 - 3 (therapeutic range)

Note: 
 therapeutic level (higher chance to BLEED too much)

Question 59

Absolute Neutrophil Count (ANC)

Answer 59

> 500

Question 60

T-Lymphocyte Count (CD4)

Answer 60

200 (HIV)

Question 61

O2 Sat

Answer 61

93 - 100

Question 62

BNP

Answer 62

Under 100 (