Why blood plasma is not always yellow

Blood plasma is the clear, yellowish and liquid part of the blood. But this is not always true. Because plasma can be not only yellowish, but also orange, amber, greenish or reddish. The reason for this is explained to you here.

Discoloration of the plasma due to medication or diet

The reason for the colour of the plasma is the yellow breakdown product bilirubin of the red blood cells. The higher the bilirubin value, the stronger the yellowish orange colour of our blood plasma. Due to our diet or the intake of certain drugs or dietary supplements, this colour changes slightly. When taking hormones such as the pill, for example, the plasma can be yellowish, greenish or orange. This happens because taking this medicine can lead to an increase in biliverdin (green breakdown product of the blood pigment hemoglobin).

Useless blood plasma

The plasma can also be milky and cloudy (lipaemic). This happens if the donor has eaten very fatty food before the donation. This makes the blood plasma unusable. Also plasma with a too reddish coloration is not used. It becomes reddish when red blood cells have burst and have already decomposed (haemolysis). Dark red blood is more often found in smokers because of the contaminated lack of oxygen. On the other hand, oxygen-rich blood is light red to orange. This is due to haemoglobin (protein of the red blood cells), which transports the oxygen.

Discolourations are harmless

However, many of the discolorations are harmless. Whether greenish, orange or yellowish – any clear plasma can be used. Ultimately, of course, it is our multi-stage quality control that decides whether the plasma is released for further processing into medicines.

You want to find out what colour your plasma is? Then make a new appointment with us now, we are looking forward to your visit!

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