Urine testing is an indispensable part of routine pregnancy checkups for doctors to check for infections and other conditions. Among the urine test results, the proteinuria ratio during pregnancy is what you need to pay attention to to ensure the health of mother and baby.
Proteinuria is defined as the presence of protein in the urine. During pregnancy, a proteinuria screening test is essential because it detects serious changes happening in relation to the health of the mother and baby so that it can be treated promptly.
During pregnancy, it is normal for protein to be present in the urine in small amounts. However, sometimes this indicator can be a sign of kidney dysfunction, stress, infection and several other medical conditions.
Proteinuria during pregnancy is usually determined through urine analysis . During normal pregnancy, proteinuria increases significantly, so protein excretion is considered abnormal in pregnant women when it exceeds 300mg / 24 hours. These could be signs of kidney problems. Proteinuria is of two types: chronic proteinuria and onset of proteinuria.
Chronic proteinuria is the presence of protein in your urine prior to pregnancy. If this occurs before the 20th week of pregnancy it is a sign of previous kidney disease.
Onset of proteinuria is a condition in which protein occurs in the urine during pregnancy and is most likely due to pre-eclampsia .
The kidneys filter waste from the blood and retain the components the body needs, including protein, but due to health problems, the kidneys let these proteins get into the urine:
Preeclampsia is a pregnancy disorder characterized by high blood pressure and often large amounts of protein in the urine. The condition does not have any symptoms but if severe, you may experience headache, swelling of the hands, face, nausea, vomiting, stomach pain, less urination and blurred vision. Severe pre-eclampsia can impair the function of the kidneys, liver, brain, eyes, heart, and lungs.
Eclampsia is a seizure that occurs concurrently with preeclampsia. These seizures usually occur before, during, or after labor. This is a dangerous case that requires immediate intervention.
HELLP syndrome , a pre-eclampsia variant, can be life threatening for you and your baby. This syndrome is characterized by diffuse anemia , increased liver enzymes and thrombocytopenia. Symptoms of this condition are similar to pre-eclampsia: nausea, vomiting, upper stomach pain, headache, fatigue, blurred vision. HELLP syndrome can lead to serious complications such as liver damage, kidney damage, pulmonary edema, placenta detachment and intravascular scattered coagulation syndrome.
During pregnancy, pre-eclampsia syndrome increases the risk of eclampsia and HELLP. These conditions can cause negative effects on the fetus such as low birth weight , premature birth, stillbirth , slow growth in the uterus ...
The presence of protein in the urine during pregnancy can be a sign of a urinary tract infection. You should consider:
How often do I urinate?
Do you feel uncomfortable when you urinate?
Urinary tract infections must be treated promptly to avoid conditions such as kidney infections, which often appear as back pain, vomiting, nausea, and chills. In addition, this condition can also affect the baby causing premature birth or low birth weight. If you have a urinary tract infection, your doctor will prescribe an antibiotic that is safe for pregnant women.
Here are some other reasons for protein-rich urine during pregnancy:
Excessive stress
Exposure to high temperatures
Fever
Dehydration
Exercise too hard
Leukemia, lupus erythematosus, chronic kidney disease, arthritis and diabetes mellitus .
You can recognize proteinuria through the following symptoms:
Swollen hands and feet
Swollen face
Foamy urine.
From mid-pregnancy, you should look for signs of pre-eclampsia such as:
Blurred eyes
Swelling of the hands, feet, and face
Constant headache
Persistent heartburn
Severe pain below the ribs.
You should see your doctor as soon as you have these symptoms. These symptoms can appear from the 27th week of pregnancy or in the first weeks after birth.
There are many methods to detect proteinuria such as:
For this test, your doctor will take a sample of your urine and test it with a urine probe with a chemical reagent strip. At this point, chemical reactions will take place and give out different colors. The test strip can also show the presence of glucose. Therefore, it can also be used to screen for gestational diabetes. Albumin is the main protein in the urine that turns the probe green. The darker the green, the more proteinuria.
This test can be done at home or in the hospital. You will be able to take a urine sample over a 24-hour period and be analyzed. If the protein in the urine is more than 300mg in 24 hours, this could be a sign of pre-eclampsia.
Protein concentration in the urine is considered normal when:
Non-pregnancy: Less than 140mg (0.14g) / 24 hours
Middle 3-month pregnancy: 0 to 255mg (0.26g) / 24 hours
Last 3 months of pregnancy: 0 to 254mg (0.25g) / 24 hours
Protein in the urine in small amounts is common during pregnancy. It can be caused by many things and it could even be because the kidneys are working better or the body is fighting off an infection.
Urine protein tests will be done during routine pregnancy visits. If the protein in your urine and blood pressure are both high, your doctor will recommend a blood test to check your cell count, blood clotting, liver and kidney function.
Proteinuria is not a disease, since treatment depends on what caused it. For example, if proteinuria is caused by diabetes, you need to control it with exercise, diet and medication. If proteinuria is caused by high blood pressure, you may need to control it.
In addition to managing the underlying disorders, you should also eat less salt in your meals. Ask your doctor about what diet is right for you. In addition, you should also drink more water.
Prenatal vitamins can worsen nausea, especially on an empty stomach. Learn practical timing and food adjustments, safer options to discuss, and when to call your pregnancy care team.
Nighttime leg cramps are common in pregnancy, but their exact cause is often unclear. Learn likely contributors, safe relief steps, and warning signs that need prompt care.
Pack a small hospital bag with the essentials, protect important medical aids, and check which items your hospital provides or restricts.
Learn when pregnancy swelling can wait for routine discussion, when to call maternity care the same day, and which symptoms need emergency help now.
Ease pregnancy heartburn with smaller meals, smart timing, and pregnancy-aware medication advice—without cutting nutritious foods or skipping prenatal supplements.
Help older children adjust to a new baby with honest, age-appropriate conversations, optional ways to join in, steady routines, and space for mixed feelings.
Try pregnancy-safe pillow positioning and gentle turning strategies for hip pain at night, and learn when persistent pain or other symptoms need medical care.
Morning sickness can ease and return as pregnancy symptoms fluctuate. Learn common triggers, practical steps, and when nausea or vomiting needs medical attention.
Fetal movement can feel different as pregnancy progresses, but a clear change in your baby’s usual pattern needs prompt attention. Learn what may affect what you feel and when to call.
Build a flexible birth plan by comparing pain relief, birth setting, support, and newborn care—and writing backup preferences for an unpredictable labor.
