Kidney and Blood Function Tests

These flashcards cover key concepts related to kidney and blood function tests, including normal levels and definitions.

Blood Urea Nitrogen (BUN)

A test that can reveal whether the urea nitrogen levels are higher than normal, suggesting kidney or liver dysfunction.

Normal BUN Level

7-20 mg/dL

Creatinine

A nitrogen-containing waste product of metabolism excreted by the kidneys; high levels indicate poor kidney filtration.

Normal Creatinine Level

0.84-1.21 mg/dL

Glomerular Filtration Rate (GFR)

A measure of kidney function and stage of kidney disease; helps determine treatment.

Normal GFR Level

90-120 mL/min/1.73m2

Hemoglobin

A protein in red blood cells that carries oxygen; measured to assess the amount of hemoglobin in blood.

Normal Hemoglobin Level (Males)

13.8-17.2 g/dL or 138-172 g/L

Normal Hemoglobin Level (Females)

12.1-15.1 g/dL or 121-151 g/L

Red Blood Cells (RBCs)

Cells that contain hemoglobin and carry oxygen; their count affects tissue oxygenation.

Normal RBC Count (Males)

4.7-6.1 cells/mcL

Normal RBC Count (Females)

4.2-5.4 cells/mcL

Platelets

Components of blood that help with clotting; their count is essential for normal clotting function.

Normal Platelet Count

150,000-400,000 platelets/mcL

Oxygen Saturation (O2)

The measure of how much oxygen red blood cells are carrying.

Normal O2 Saturation Range

95%-100%

Prothrombin

A blood test that measures the time it takes for the liquid portion of your blood to clot.