Creatinine Test, Serum

The following conditions may necessitate a creatinine test:

• If you have any kidney disease symptoms or indicators
• In case of diabetes or high blood pressure
• You should get screened for any other illnesses that raise the risk of kidney disease.
• to track the course or therapy of kidney illness
• to keep an eye out for drug side effects that could affect kidney function or cause kidney damage
• to keep an eye on a transplanted kidney's performance

The Creatinine Blood Test is a simple procedure requiring a small blood sample. Here's what to expect:

• The blood sample is taken from the inside of the arm.

• The area is cleaned with an antiseptic.

• A band is tied around the arm to make veins more visible.

• A needle is inserted into the vein to collect the sample.

• You may feel a slight prick when the needle is inserted.

• Afterward, the site is covered with a bandage.

Low creatinine levels may indicate:

• Impaired kidney function or diseases reducing blood flow to kidneys

• Muscular disorders (loss of muscle mass)

• Malnutrition

• Certain medications or excessive fluid loss

High creatinine levels may suggest:

• Kidney dysfunction or underlying medical issues

• Temporary increase due to exercise, medications, certain diets, or pregnancy

• Causes include:

  • Urinary tract blockage

  • Kidney damage or infection

  • Dehydration

  • Muscle fiber breakdown

  • Pregnancy complications like eclampsia or pre-eclampsia

Though the risk is minimal, variations in veins and arteries may lead to:

• Bleeding

• Lightheadedness

• Multiple puncture attempts

• Hematoma

GFR (glomerular filtration rate) is determined using the Serum Creatinine Test results. It measures the plasma volume filtered by the glomerulus per second and assesses kidney function.

• Inform your doctor about any current medications (prescription or OTC).

• Mention any drug allergies.

• Some drugs (e.g., cimetidine, chemotherapy drugs, cephalosporins) can affect creatinine levels.

• This information helps your doctor interpret your test results accurately.

Yes, related tests include:

• Kidney function tests

• Blood urea nitrogen (BUN) test

• Basic Metabolic Panel (BMP)

• Comprehensive Metabolic Panel (CMP)

No specific preparation is needed. However, consult your doctor beforehand for any individual instructions based on your health history.

• Men: 0.74 to 1.35 mg/dL

• Women: 0.59 to 1.04 mg/dL
  Note: Women tend to have lower levels due to lower muscle mass. Levels vary based on size and muscle mass.

Your doctor may recommend the test if you show signs of kidney disease, such as:

• Fatigue and trouble sleeping

• Decreased appetite

• Swelling in face, wrists, ankles, or abdomen

• Pain in the lower back near kidneys

• Changes in urination

• High blood pressure

• Nausea or vomiting

The Serum Creatinine Test measures the level of creatinine in the blood and helps assess kidney health and function.