Creatine
CPT4 code
Name of the Procedure:
Creatine Blood Test
Common name(s): Creatine Test, Serum Creatinine Test
Medical term: Serum Creatinine Concentration
Summary
The Creatine Blood Test measures the level of creatinine in the blood, which helps to evaluate kidney function. Creatinine is a waste product produced by muscles from the breakdown of a compound called creatine.
Purpose
Medical Condition
This test is used to diagnose and monitor conditions related to kidney function, such as kidney disease or damage.
Goals or Expected Outcomes
The goal is to determine how well the kidneys are filtering waste from the blood.
Indications
Symptoms or Conditions
- Persistent fatigue
- Swelling (edema), particularly in the legs and around the eyes
- Changes in urination frequency or color
- High blood pressure
- Muscle cramping
Patient Criteria
- Patients with a history of kidney disease or conditions that may affect kidney function.
- People with chronic diseases such as diabetes or hypertension.
- Individuals experiencing symptoms indicative of kidney issues.
Preparation
- Typically, no fasting or special preparation is required.
- Inform your healthcare provider about any medications or supplements you are taking, as some substances can affect creatinine levels.
Procedure Description
- Preparation: A healthcare provider will cleanse the skin over a vein in your arm.
- Blood Draw: A needle is inserted into the vein to draw a blood sample.
- Collection: The blood is collected into a tube.
- Completion: The needle is removed, and pressure is applied to the puncture site to stop any bleeding.
Tools and Equipment
- Sterilized needle
- Blood collection tube
- Alcohol wipe or antiseptic solution
Anesthesia or Sedation
- Local anesthesia or sedation is not typically required.
Duration
The blood draw usually takes about 5-10 minutes.
Setting
This procedure is commonly performed in:
- Hospitals
- Outpatient clinics
- Diagnostic laboratories
Personnel
- Phlebotomist or qualified nurse
- Sometimes a medical technologist to analyze the sample
Risks and Complications
Common Risks
- Minor pain or discomfort at the needle insertion site
- Bruising
Rare Complications
- Infection at the puncture site
- Hematoma (a collection of blood under the skin)
Benefits
- Accurate assessment of kidney function
- Early detection of kidney disease
- Monitoring progression of kidney-related conditions
Realization of Benefits
- Results are typically available within a few hours to a couple of days, depending on the lab.
Recovery
- No significant recovery time is required.
- Keep the puncture site clean and dry.
- Follow any additional instructions given by the healthcare provider.
Alternatives
Other Treatment Options
- Urine test to measure creatinine clearance
- Blood urea nitrogen (BUN) test
Pros and Cons
- Creatinine Blood Test: Quick and non-invasive but might not provide comprehensive kidney function information.
- Creatinine Clearance Test: More comprehensive, but requires urine collection over 24 hours.
- BUN Test: Provides additional information but not as specific as creatinine measurement for kidney function.
Patient Experience
During the Procedure
- You may feel a slight pinch or discomfort when the needle is inserted.
After the Procedure
- Mild soreness or bruising at the puncture site is possible.
- Any discomfort typically subsides quickly, and no significant pain is expected.
Pain Management and Comfort Measures
- Applying a cold pack to the puncture site can help reduce pain or swelling.
- Over-the-counter pain relievers are usually not necessary.