Tiredness

Fatigue can have many underlying factors, making it difficult to pinpoint a cause from symptoms alone. This panel targets several systems that are commonly associated with energy levels: thyroid function, iron stores, blood cell production, vitamin status, and glucose metabolism. By measuring them together, the results may help narrow down which areas could be contributing.

• Men who experience persistent tiredness that does not improve with adequate sleep and rest
• Those noticing reduced physical or mental performance without an obvious explanation
• Men who want to check whether nutritional deficiencies or metabolic factors may be playing a role in how they feel
• Those who prefer a targeted panel rather than testing individual markers one at a time

• Complete Blood Count (CBC): red blood cells, white blood cells, haemoglobin, haematocrit, and platelets. May reveal anaemia or other haematological factors associated with fatigue.
• Thyroid: TSH (mu/l, ref: 0.27-4.2), Free T3 (pmol/l, ref: 3.1-6.8), Free T4 (pmol/l, ref: 12-22). Thyroid function can influence energy levels, metabolism, and mood.
• Iron: Ferritin (ug/l). Reflects iron stores, which may be depleted before a full blood count shows abnormalities.
• Vitamins: Vitamin B12 (pmol/l, ref: 145-569), Vitamin D 25-OH (nmol/l). Both may be associated with fatigue when levels are low.
• Glucose metabolism: Glucose Fasting (mmol/l), HbA1c (mmol/mol). Blood sugar regulation can affect energy stability throughout the day.

Fatigue is rarely caused by a single factor, which is why this panel casts a wider net. Low Ferritin alongside a normal CBC could suggest early iron depletion before anaemia develops. Thyroid markers outside expected ranges may indicate the thyroid is contributing to low energy. Suboptimal Vitamin D or B12 levels can also be associated with tiredness. And blood sugar irregularities (reflected in Glucose and HbA1c) may affect how consistently energy is available throughout the day. Viewing these results together can help identify patterns that would not be visible from a single test.

A blood sample is drawn at a certified sample point (afnamepunt). There are over 750 locations across the Netherlands. After placing your order, you can select a location and time that works for you. The appointment typically takes around 10 to 15 minutes.

This panel may be useful when fatigue is persistent and not easily explained by lifestyle factors such as sleep deprivation or overtraining. It can also be relevant when tiredness is accompanied by other symptoms like difficulty concentrating, muscle weakness, or mood changes, and you want to check whether measurable factors could be involved.

Each marker is presented with its reference range. Because fatigue can involve multiple overlapping factors, the most valuable insights often come from looking at the results as a whole. A healthcare provider can help interpret which findings, if any, may be contributing to your symptoms and whether further investigation is appropriate.

Fasting for 8 to 12 hours is required for accurate fasting glucose results. Water is permitted during the fasting period.

Your results are typically available within a few business days in your personal dashboard. The report includes measured values alongside reference ranges. If the results point toward one or more potential contributing factors, discussing them with a healthcare provider can help determine appropriate next steps.