The presence of an excessive quantity of protein in the urine is known as proteinuria, and it is frequently seen as a crucial indicator that the kidneys may not be operating normally. Under normal circumstances, the kidneys retain vital components like proteins while filtering trash and extra fluid from the blood. Protein may leak into the urine rather than staying in the circulation when the kidneys filtering function is compromised. Urine that looks foamy, frothy, or abnormally bubbly because of the increased protein concentration is one of the most obvious symptoms of proteinuria.
Numerous factors from transient and minor causes to more serious underlying medical conditions, might lead to the development of this illness. One of the most frequent causes is chronic renal disease, although persons with diabetes, high blood pressure, autoimmune diseases like lupus, and infections that impair kidney function can also develop proteinuria.
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Proteinuria
When proteins like albumin, which are typically found in your blood, flow into your urine, it is known as proteinuria. Usually, this is avoided by your kidneys. However, they can be harmed by renal disease or other chronic illnesses, which makes it possible for proteins to exit your body through urine. Temporary proteinuria can also occasionally be caused by other, less dangerous diseases. Albuminuria is another term for proteinuria.
Types of Proteinuria
There are three main types of proteinuria:
- Transient: This is proteinuria, or sporadic (on and off) protein in the urine that resolves on its own. It is typically brought on by transient factors like fever, stress, or vigorous activity.
- Orthostatic: After prolonged sitting or standing, some people have elevated protein levels in their urine; however, after lying down, these levels return to normal. Younger people may experience this particularly if they are tall and thin.
- Persistent: You have persistent proteinuria if several urine tests over time reveal protein in your urine. This may indicate a more serious illness, such as renal disease.
Level of Protein in your Urine
Urine typically contains less than 150 mg of protein each day. If your urine contains more than 150 mg of protein, you have proteinuria. The reference range on your test results should always be checked because it can change based on the lab.
Nephrotic-range proteinuria is defined as having 3 to 3.5 grams (3,000 to 3,5000 mg) of protein in your urine each day. Your kidneys will release too much protein in your urine if you have nephrotic syndrome, a very uncommon illness.
Symptoms of protein in your urine
If you have proteinuria, you may have bubbles or foamy urine. However, minor protein levels in the urine typically don’t result in any symptoms.
Your kidneys may be harmed if you’re losing a lot of protein. This may indicate that your blood protein levels are too low. Symptoms of this might include:
- Oedema (swelling) in the ankles, feet, belly, or face
- Insufficient breathing
- Weariness
- Sickness and vomiting
- Absence of appetite
- Nighttime muscle cramps
- Puffiness, particularly in the morning, around your eyes
Causes
High protein levels in your urine can indicate that your kidneys aren’t functioning properly. Your blood carries protein throughout your body, where it serves a number of purposes. Your kidneys glomeruli, which are microscopic blood arteries, filter out waste from your blood. Urine is how the waste exits your body. Your glomeruli, pronounced “gluh-MEHR-yuh-lie,” should not allow proteins to enter your urine. However, tubules long, thin tubes recover and reintroduce them into your circulation if they manage to get through.
Protein in your urine can be caused by anything from transient ailments to severe, chronic illnesses. Among the causes are:
- Dehydration
- Kidney-related conditions include kidney stones, cancer, infection, inflammation (glomerulonephritis) and chronic kidney disease.
- Kidney disease associated with diabetes
- Some autoimmune diseases such as rheumatoid arthritis and lupus
- One kind of blood cancer is multiple myeloma.
- Haemolysis, or the breakdown of red blood cells
- Heart-related conditions
- High blood pressure that’s not managed
Care and Treatment
A urine test is used by your physician to diagnose proteinuria. Your healthcare professional will test your urine in a cup using a dipstick that changes colour when protein is present. This is often a component of a urinalysis, in which a medical professional examines the appearance of your urine and searches for blood cells, protein fragments (casts) and other materials.
A urine test is used by your physician to diagnose proteinuria. Your healthcare professional will test your urine in a cup using a dipstick that changes colour when protein is present. This is often a component of a urinalysis, in which a medical professional examines the appearance of your urine and searches for blood cells, protein fragments (casts), and other materials.
Instead than treating proteinuria per se, providers address the source of the protein in your urine. Depending on the reason, your healthcare practitioner could advise:
Drugs, such as those that directly lower the amount of protein in your urine or weaken your immune system
- Diabetes and hypertension treatment
- Giving up smoking
- Modifying your diet
- If your kidneys fail, dialysis
- A kidney transplant
