Lab Stats

Question 1

Osmolality

Answer 1

280 - 300 mOsm/kg H2O

Question 2

Sodium

Answer 2

136 - 145 mEq/L

Question 3

Potassium

Answer 3

3.5 - 5 meq/L

Question 4

Chloride

Answer 4

98 - 106 meq/L

Question 5

Bicarbonate (HCO3)

Answer 5

Arterial 22 - 26 meq/L Venous 24 - 30 meq/L

Question 6

Total Calcium

Answer 6

8.4 - 10.5 meq/L

Question 7

Magnesium

Answer 7

1.5 - 2.5 meq/L

Question 8

Phosphate

Answer 8

2.7 - 4.5 meq/L

Question 9

pH

Answer 9

7.35 - 7.45

Question 10

PaCO2

Answer 10

35 - 45 mm Hg

Question 11

PaO2

Answer 11

80 - 100 mm Hg

Question 12

BUN

Answer 12

5-20 mg/dl; can reveal whether your urea nitrogen levels are higher than normal, suggesting that your kidneys or liver may not be working properly

Question 13

Creatinine

Answer 13

0.6-1.3mg/dl; Elevated creatinine level signifies impaired kidney function

Question 14

PT/INR

Answer 14

< 1.1 is normal; 2.0 - 3.0 is good for people on anticoagulants; high indicates a clotting disorder

Question 15

PTT

Answer 15

25 - 35 seconds; measures how long it takes for blood to clot

Question 16

HgB (hemoglobin)

Answer 16

12-18g/dl
responsible for delivery of oxygen to the tissues
When the hemoglobin level is low, the patient has anemia

Question 17

Hct (Hematocrit)

Answer 17

36-54%
volume of red blood cells compared to the total blood volume
If a patient is severely dehydrated, the hemoglobin and hematocrit will appear higher than if the patient were normovolemic; if the patient is fluid overloaded, they will be lower than their actual level

Question 18

platelet count

Answer 18

ranges from 150,000 to 450,000 platelets per microliter of blood; to low- abnormal bleeding; to high - clotting

Question 19

HCG

Answer 19

less than 5 mIU/mL is considered negative for pregnancy, above 25 mIU/mL is considered positive for pregnancy

Question 20

AST

Answer 20

10 to 40 units per liter; Abnormal levels can be associated with liver injury (A Sad Tale - if you’re liver is damaged you only have 10 - 40 years to live)

Question 21

ALT

Answer 21

7 to 56 units per liter, high levels indicate liver damage

A Long Time - a drunk dude that thought he was serving 7yrs in prison, but he is actually serving 56

Question 22

Blood glucose

Answer 22

70 - 100

Question 23

WBC

Answer 23

5000-10000
Neutrophil - 55 - 70% - bacterial
Lymphocyte - 20 - 40% - viral or bacterial
Eosinophils - 1 - 4% - infection/allergies - increase in fungal

Question 24

CRP

Answer 24

< 10 mg/L - High levels means inflammation

Question 25

ESR

Answer 25

< 20 mm/hr - can indicate inflammation

Question 26

lactic acid

Answer 26

< 2 mmol/L - higher levels indicate infection

Question 27

CBC (complete blood count)

Answer 27

WBC 5k - 10k
Hgb 12 - 18 g/dl
Hct 36 - 54%
platelet 150k - 400k per mcL

Question 28

PSA

Answer 28

2.6 - 4ng/ml - Can indicate prostate cancer

Question 29

T3

Answer 29

70-200

Question 30

T4

Answer 30

4-12

Question 31

TSH

Answer 31

0.4-4 low indicates hyperthyroidism