Question

Which of the following tests for the clear fluid that remains after blood has clotted (serum)?

1) Hemoglobin test
2) Fibrinogen test
3) Hematocrit test
4) Creatinine test

Answer 1

Option 4). The Creatinine test is used for the clear fluid that remains after blood has clotted (serum). Serum is plasma minus the clotting factors like fibrinogen. For glucose, the levels are measured in mg/dL or mmol/L.

Step-by-step explanation:

The Creatinine test looks for serum, the clear fluid that is left over after blood clots. Plasma less fibrinogen equals serum, which is the portion of blood that remains after clotting components like fibrinogen are eliminated. Numerous chemicals, including creatinine, a waste product that the kidneys filter out, can be detected in serum. The amount of hemoglobin in blood is measured by hemoglobin tests; the percentage of red blood cells in blood is determined by hematocrit tests; and the levels of fibrinogen in blood are determined by fibrinogen tests.

When it comes to glucose levels in the blood, the measurements given are generally in milligrams per deciliter (mg/dL) or millimoles per liter (mmol/L).