Complement Level C4

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  • Complement Level C4

    1 test included



blood sample




Age group

7 years & above

As the name suggests, the Complement Level C4 test is used to gauge the complement C4 levels in your bloodstream. But what is complement C4? Well, it is a part of the complement system, which is a group of essential proteins. These proteins will back your immune system up and assist in warding off infections, bacteria, and other foreign substances.

Out of the nine complements, complement C4 is responsible for fighting off certain specific infections. However, if complement C4 levels go below average, your immune system will weaken and pave the way for autoimmune diseases like Rheumatoid arthritis or lupus.

So, get the Complement Level C4 test done as soon as you start experiencing the following symptoms:

  • Muscle weakness
  • Muscle paralysis 
  • Joint pain 
  • Extreme fatigue 
  • Unexpected weight loss
  • Muscle pain

Under normal circumstances, complement C4 levels for men must range from 2 to 72 milligrams (mg) of complement per deciliter (dL) of blood. On the other hand, it must be between 13 and 75 mg of complement per dL of blood for women.

Keep in mind that any imbalance in these complement C4 levels can lead to several dangerous ailments.

For instance, if your C4 levels are lower than normal, then you are at risk of contracting the following diseases:

  • Hepatitis
  • Bacterial infections 
  • Lupus Nephritis
  • Glomerulonephritis
  • Hereditary Angioedema 
  • Malnutrition
  • Systemic Lupus Erythematosus
  • Rejection of kidney transplant
  • Cirrhosis

However, if you have higher than normal complement C4 levels, then you might catch the following ailments:

  • Inflammation
  • Cancer 
  • Ulcerative colitis

If you experience any of the symptoms mentioned above, it is time to get the Complement Level C4 test done. Apollo 24/7 offers it at an affordable C4 level test cost, and you will receive the results within just 36 hours.

There is no need for any special preparation before the test. However, you must share your full medical history with the healthcare practitioner. If you are currently consuming any medication that might tamper with the test results, your doctor might ask you to stop taking them a while before the test temporarily.

If you are still unsure about getting the test done, here are a few reasons you should get a proper diagnosis immediately:

  • If you have a chronic disease or an autoimmune disease (lupus, Rheumatoid arthritis, etc.)
  • If you need to monitor the effectiveness of treatments for certain chronic or autoimmune disease treatments
  • If you have chronic infections, kidney issues, hepatitis, etc. 
  • If you have recently had a major injury, it can alter the complement C4 levels in your bloodstream 

packageTop Tests with Complement Level C4

faqFrequently Asked Questions (FAQs)

No, there are no such complications or risks associated with the above test. The test uses a blood sample; hence, you might experience light scarring or bruising at the point of contact with the needle.
Here are some possible reasons for the increase in your complement C4 levels: Viral infections  Obesity  Diabetes Heart disease  Metabolic syndrome Obesity  Diabetes Autoimmunity  Non-alcoholic fatty liver disease  Cancer
Some of the other tests that you should consider getting done with the above test: Erythrocyte Sedimentation Rate (ESR) test  C-reactive protein test Comprehensive panel of tests for muscles, liver, and kidneys
The test results will be affected if the blood sample is mishandled. If this is the case, the C4 levels on your report will be falsely low.
You will need to get the Complement level C4 test done in case you start noticing the following symptoms: Anaemia  Headaches Extreme tiredness Pain in your chest  Hair loss Joint pain and swelling
No, there is no such special preparation required for the complement level C4 test. However, you will have to inform your healthcare practitioner in case you are consuming any medications. In case these medications interfere with the test, you will have to stop taking them for a while.

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The information mentioned above is meant for educational purposes only and should not be taken as a substitute to your Physician’s advice. It is highly recommended that the customer consults with a qualified healthcare professional to interpret test results