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Hematocrit Testing from Dried
Blood Spot Samples

Offer hematocrit testing with an easy at-home collection method.

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What Is Hematocrit?

Hematocrit (Hct) refers to the percentage of red blood cells in total blood volume. It reflects how efficiently the blood carries oxygen to tissues. Hct levels are influenced by hydration, altitude, training, diet, and overall health. This test provides an indicator of oxygen delivery and fluid balance.

Oxygen Transport

Hematocrit levels indicate the body's capacity to carry oxygen, supporting performance and recovery.
Hydration Status

Dehydration concentrates the blood, increasing Hct; overhydration dilutes it, lowering Hct.

Why Is Hematocrit Testing Important?

  • Assess hydration status
  • Low Hct may indicate anemia or nutrient deficiencies
  • Ensure accurate results from DBS samples, as hematocrit levels affect how blood spreads and can influence analyte concentration

What We Measure

Analyte

Hematocrit

Sample type

Dried blood spot (DBS)

Method

Spectroscopy

Applications

  • Performance
    Track oxygen capacity and blood concentration in athletes, runners, and endurance clients.
  • Supplement Validation
    Measure the impact of iron, B12, or energy-boosting supplements on red blood cell volume.
  • Clinical Programs
    Support routine screening, hydration monitoring, and personalized health insights in remote care settings.

FAQ

It measures the percentage of red blood cells in the blood. It’s a direct indicator of oxygen transport and hydration status.

A high hematocrit level means there are more red blood cells than normal relative to plasma. This can happen due to dehydration, living at high altitudes, or disorders like polycythemia, where the body produces too many red blood cells.

Normal hematocrit levels vary by age and sex. For adult men, it's typically about 41% to 50%, and for adult women, about 36% to 44%. These ranges reflect a healthy balance between red cells and plasma in the blood.

Yes. Hematocrit testing can be performed using a dried blood spot sample collected through a simple finger-prick.

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