Tests that are likely to be affected:
* Hemoglobin and hematocrit: These are the most sensitive to hemoconcentration, as the red blood cells are packed more tightly in the smaller volume of plasma.
* Electrolytes (Sodium, Potassium, Chloride): The electrolytes become more concentrated in the blood as plasma volume decreases.
* Blood urea nitrogen (BUN) and creatinine: These waste products also become more concentrated with hemoconcentration.
* Total protein and albumin: These proteins will appear higher because of the reduced plasma volume.
* Glucose: Blood glucose can appear higher due to hemoconcentration.
* Blood clotting factors: These can appear higher due to hemoconcentration.
Tests that may be less affected:
* Liver function tests: While some liver enzymes can fluctuate with hemoconcentration, the effect is usually less pronounced than with other tests.
* Hormone levels: Hemoconcentration generally has a minimal effect on most hormone levels.
Important Considerations:
* The degree of hemoconcentration: The more severe the hemoconcentration, the greater the impact on test results.
* Underlying cause: The cause of hemoconcentration can influence which tests are most affected. For example, dehydration can have a different impact than severe blood loss.
* Proper sample collection: Collecting blood samples properly is crucial. Tourniquet use for an extended period can induce hemoconcentration, so it's important to follow standard procedures.
It's essential to note that hemoconcentration can significantly affect laboratory results and potentially lead to misinterpretations. It's important to be aware of the possibility of hemoconcentration and to consider it when interpreting test results.
If you suspect hemoconcentration, it's important to communicate this to your doctor or lab personnel. They can then take appropriate steps to correct for any potential bias in the test results.