Normal Ranges for Labs

Question 1

What is the normal range for Potassium?

Answer 1

3.5-5.1 mmol/L

Question 2

What is the normal range for Sodium?

Answer 2

136-145 mmol/L

Question 3

What is the normal range for Chloride?

Answer 3

98-107 mmol/L

Question 4

What is the normal range for Calcium?

Answer 4

8.8-10.2 mg/dL

Question 5

What is the normal range for Creatinine?

What does it do?

Answer 5

0.5-1.5 mg/dL

Function of skeletal muscle breakdown and renal excretion
So if muscle mass is stable, increases reflect poor renal function
Decreased Creatinine reflect deceased muscle mass (malnutrition)

Question 6

What is the normal range for BUN?

Answer 6

6-20 mg/dL
Indicate body’s ability to clear nitrogenous wastes - Urea in urine
High levels may indicate renal failure, Also Increased metabolism due to fever or Stress

Question 7

What is the normal range for Lactate?

Answer 7

0.5 - 2.2 mmol/L

Question 8

What is BNP? What are the Lab ranges?

Answer 8

Its a Polypeptide that is released by the ventricles of the heart in response to stretching.
less than 100 – Normal
300 – Mild CHF
600 – Moderate CHF
900 – Severe CHF

Question 9

What are the normal values for RBCs and what does anemia represent?

Answer 9

~4.5-6

Low Values Anemia:
Bone marrow problems
Deficiencies: iron, Vit B12, other chronic diseases
Breakdown of RBC: Fault in RBC, drugs, infections,
Bleeding, trauma

Question 10

What causes secondary polycythemia?

Answer 10

COPD/Chronic lung disease or Being at High Altitudes

Question 11

On A CBC, What is a typical response to a bacterial infection?

Answer 11

Neutrophilia with a left shift (increase in bands and presence of immature neutrophils in the peripheral blood)

Question 12

What is the difference between pseudo and regular neutrophilia?

Answer 12

its transient and last a few hours. Physiologic. can be caused by stress or EPI/catacholmine.
Regular can be caused by infection.

Question 13

What is the disease progression of Sepsis?

Answer 13

Infection leading to WBC recruitment,

Vasodilation and lower BP with leakiness into interstitial spaces leading to organ failure from blood leaking and hypoxia. ARDS

Damaged blood vessels that leads to drop in platelets. Causing DIC

Question 14

What is the normal white cell count?

Answer 14

3.5-10

Question 15

What is the normal platelet count?

Answer 15

150-450

Question 16

What is the normal hemoglobin count?

Answer 16

(M) 13.5-17.5

(F) 12.0-15.5

Question 17

What is the hematocrit normal range?

Answer 17

Male: 38.8-50.0 percent
Female: 34.9-44.5 percent