In an adult male the GFR (Glomerular Filtration Rate) averages:

Appeared in: NVS- 2025

Explanation

The Glomerular Filtration Rate (GFR) is the volume of fluid filtered from the blood by the kidneys' glomeruli per unit of time.
For a healthy adult male, the standard average GFR is approximately 125 ml/min.
This value is a key indicator of renal excretory function and is used to assess overall kidney health.
This rate totals about 180 liters of filtrate produced per day.

Option A: This value confuses the daily filtration volume with the per-minute rate. The kidneys filter approximately 180 liters per day, not 180 milliliters per minute.
Option B: This value is significantly higher than the normal physiological range for GFR in a healthy resting adult.
Option C: This value is closer to the average GFR for a healthy adult female. Male GFR is typically higher due to greater average body size and muscle mass.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Normal Glomerular Filtration Rate (GFR) in adults as background academic context rather than a clinical decision trigger.
GFR is the most important measure of kidney function. In clinical practice, it is usually estimated (eGFR) from serum creatinine levels.
Nurses play a crucial role in monitoring eGFR results, recognizing declines in kidney function, and managing care for patients with chronic kidney disease (CKD).
Many medications are cleared by the kidneys, so nurses must be aware that a patient's GFR affects drug dosing to prevent toxicity.

How to Approach the Question

First, identify the core concept being tested, which is the 'Glomerular Filtration Rate (GFR)'.
Recognize that the question asks for a specific, standard physiological value for a particular demographic ('adult male').
Recall the normal physiological values associated with renal function. The standard average GFR is a fundamental number to memorize.
Carefully evaluate the options. Be alert for common distractors. The number '180' is a classic distractor related to GFR, representing the daily volume in liters (180 L/day), not the per-minute rate.
Differentiate between the values for males and females if known (male GFR is typically higher).
Select the option that matches the well-established average GFR for an adult male, which is 125 ml/min.

Concept Tested & Keywords

Concept Tested: Normal Glomerular Filtration Rate (GFR) in adults
Stem keywords: adult male, GFR, Glomerular Filtration Rate, averages
Lead-in keywords: averages
Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.
Negative lead-in flag: false

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E6 Physiology Guyton 4SAE Part 2B p. 19-21

E6 Medicine Harrison 22e Part 2 p. 291-293

Practise the full NVS- 2025

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