Description of the blood Analysis: 

G6PD is an essential enzyme found in all cells, but it is particularly critical for red blood cells. It acts as a primary antioxidant protector. Because red blood cells carry oxygen, they are constantly exposed to “oxidative stress” (reactive molecules that can damage the cell). G6PD produces a substance called NADPH, which acts like a shield, neutralizing these harmful molecules and keeping the red blood cell intact.

What Does the Analysis Represent?

• Goal: To determine if a person has a deficiency of this enzyme.
• Main Application: Diagnosing the cause of hemolytic anemia (when red blood cells burst faster than they can be made) and screening newborns.
• Biological Process: In people with a G6PD deficiency, the red blood cells lack their protective shield. When exposed to certain triggers—like specific foods, infections, or medications—the cells become overwhelmed by oxidative stress and rupture (hemolysis).

Recommendations for the Test (General)

• Fasting: Not required.
• Timing of the Test: Crucial. Do not take this test during or immediately after a “hemolytic crisis” (an active episode of cell bursting). During a crisis, the body destroys the cells with the least enzyme first, leaving behind younger cells that naturally have higher enzyme levels. This can result in a “false normal” result. It is best to wait several weeks after an episode.
• Recent Transfusions: Wait at least 3 months after a blood transfusion, as donor blood will contain normal G6PD levels and mask a deficiency.
• Material: Venous blood (whole blood, usually in an EDTA tube).

What Can Affect the Results?

• Genetics: This is an X-linked genetic condition. It is much more common in males (who have one X chromosome) than in females.
• Age of Red Cells: Younger red blood cells (reticulocytes) have more G6PD than older ones. If you have a high reticulocyte count, it might artificially inflate the result.
• Active Hemolysis: As mentioned, testing during a crisis can hide the deficiency.

When to Take the Test?

• Unexplained Jaundice: If the skin or eyes turn yellow suddenly, especially after eating certain foods or starting a new medication.
• Dark Urine: Often a sign that hemoglobin from burst cells is being filtered by the kidneys.
• Post-Infection Anemia: If you feel extremely fatigued or pale following a viral or bacterial infection.
• New Medication: Before starting drugs known to trigger G6PD crises, such as certain antimalarials (Primaquine) or sulfa antibiotics.
• Newborn Screening: If a baby has persistent or severe jaundice.

How to Interpret the Results?

Important: Diagnosis of G6PD deficiency and related health advice must be provided exclusively by a doctor. Low Activity: Confirms a deficiency of this enzyme, which increases the risk of hemolytic anemia when triggered by certain foods, like fava beans, or specific medications. Normal Activity: Indicates the enzyme is functioning properly to protect red blood cells.

Common Triggers to Avoid (If Deficient)

• Fava Beans: Consumption of these beans can trigger a severe reaction known as “Favism.”
• Specific Medications: Sulfa drugs, certain anti-malarials, aspirin (in high doses), and some NSAIDs.
• Chemicals: Naphthalene (found in mothballs).
• Infections: Severe infections are actually the most common trigger for a G6PD crisis.

Possible Further Investigations

• Complete Blood Count (CBC): To check for anemia and look for “Heinz bodies” (clumps of damaged hemoglobin) under a microscope.
• Reticulocyte Count: To see how fast the bone marrow is producing new red blood cells.
• Bilirubin (Indirect): To measure the breakdown of red blood cells.
• Genetic Testing: To identify the specific variant of the G6PD mutation.

When Does the Next Step Make Sense? 

The next step is vital if a deficiency is confirmed. Knowledge is the best “treatment” for G6PD deficiency. Once you know you have it, you can simply avoid the list of triggers to prevent future episodes of anemia. If a crisis is currently happening, the next step involves medical support to protect the kidneys and potentially a blood transfusion if the anemia is severe.

👉 If necessary, you can discuss the results of the analysis with a specialist, such as a hematologist (Doctors – TAMC).