Normal serum albumin level is?

Appeared in: SCTIMST Staff Nurse - 2015 (Set-A)

Explanation

The correct range for normal serum albumin in the blood is 3.5 to 5.5 g/dL (or gm/100 mL).
Albumin is the most abundant protein in blood plasma, synthesized by the liver.
Its primary function is to maintain colloid osmotic pressure, which prevents fluid from leaking out of blood vessels into tissues.
This range reflects a healthy state of liver function and nutritional intake.

Option A: This range (1.5-3.0 g/dL) indicates moderate to severe hypoalbuminemia (low albumin).
Option C: This range (5.0-7.5 g/dL) is higher than the normal physiological range for serum albumin.
Option D: This range (7.0-10.0 g/dL) is significantly elevated and represents hyperalbuminemia, which is not a normal physiological state.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Normal laboratory values for serum albumin as background academic context rather than a clinical decision trigger.
Nurses monitor serum albumin as a key indicator of a patient's nutritional status, liver function, and kidney health.
A low albumin level is a red flag for potential complications like edema, ascites, and poor wound healing. Nurses should perform regular skin assessments and monitor for fluid overload.
When administering albumin-binding drugs (like warfarin or phenytoin) to a patient with low albumin, there is a higher risk of drug toxicity because more of the drug is free and active in the bloodstream.

How to Approach the Question

This is a factual recall question that tests your knowledge of standard laboratory values.
Identify the key parameter in the question, which is 'serum albumin level'.
Recall the normal physiological range for this value in an adult.
The standard range is approximately 3.5 to 5.5 g/dL.
Compare this known range to the options provided.
Select the option that matches the correct range and eliminate the options that represent abnormally low (hypoalbuminemia) or high (hyperalbuminemia) levels.

Concept Tested & Keywords

QN_AyDiRzPZ39RfqM0rfZz

E6 One Stop Resource all for your Exam Needs in Biochemistry (pp 6-135 of 140) p. 65-67

E6 Physiology Guyton 4SAE Part 1 p. 170-172

E6 Textbook of Biochemistry for medical StudentsDM Vasudevan Part 2 — Subpart A (pp 1-239 of 478) p. 60-62

Practise the full SCTIMST Staff Nurse - 2015 (Set-A)

Attempt every question from this paper in a timed mock, then review the full solution for each one.