G6PD

This Test is a blood test used to determine the level of the G6PD enzyme in red blood cells. This enzyme plays a crucial role in protecting red blood cells from damage caused by oxidative stress.

A deficiency is a genetic condition that can lead to the breakdown of red blood cells (hemolysis), especially when exposed to certain medications, infections, or foods such as fava beans. This can result in symptoms like fatigue, jaundice, dark urine, and anemia.

The purpose of this test is to:

• Measure G6PD enzyme levels in the blood
• Diagnose G6PD deficiency
• Assess risk of hemolytic anemia
• Help identify causes of unexplained jaundice or anemia
• Guide safe medication and dietary choices

G6PD Test

The G6PD (Glucose-6-Phosphate Dehydrogenase) test measures the activity of the G6PD enzyme in red blood cells. This enzyme helps protect red blood cells from oxidative damage and plays an important role in maintaining healthy red blood cells.

A deficiency can make red blood cells more vulnerable to destruction, potentially causing hemolytic anemia when triggered by certain medicines, infections, or foods such as fava beans. The condition is usually inherited and is more common in certain populations.

The test may be recommended when there is unexplained anemia, jaundice, dark-coloured urine, or suspected hemolysis. It can also be useful before administering certain medications known to cause problems in individuals with G6PD deficiency.

This Test is Recommended for Individuals:

• Individuals with suspected G6PD deficiency
• People with unexplained hemolytic anemia
• Individuals experiencing unexplained jaundice or dark urine
• Newborns or children with suspected inherited red blood cell disorders
• People with a family history of G6PD deficiency
• Individuals who develop hemolysis after certain medications or infections
• Patients being evaluated before treatment with medications that may trigger hemolysis in G6PD-deficient individuals
• Individuals whose healthcare provider recommends screening based on clinical or family history

FAQs

1. What does the G6PD test detect?
The test measures the activity of the G6PD enzyme in red blood cells. Low enzyme activity may indicate G6PD deficiency, which can increase the risk of red blood cell breakdown under certain conditions.

2. What can trigger hemolysis in someone with G6PD deficiency?
Triggers can include certain medications, infections, and fava beans. The specific risk varies between individuals and depends on the genetic variant and the exposure. Always inform your healthcare provider if you have known or suspected G6PD deficiency before starting new medicines.

3. Can the G6PD test be performed during an episode of hemolysis?
Testing during or shortly after an episode of hemolysis can sometimes produce a misleadingly normal result, because older red blood cells with lower enzyme activity may have been destroyed and younger cells may have higher activity. Your healthcare provider may recommend repeat testing after recovery if the initial result does not match the clinical picture.