OBSTETRIC SCAN FOR BIOPHYSICAL PROFILE (BPP)
Also Known As
Lab Test
₹300
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About The Test
Purpose of the BPP Test
- Monitors fetal breathing, movement, tone, and amniotic fluid levels
- Adds nonstress test (NST) to measure heart-rate patterns
- Detects early signs of fetal distress before complications arise
Cadabams Diagnostics Expertise
- Radiologists trained in fetal imaging
- State-of-the-art 3D/4D ultrasound machines for crystal-clear images
- Same-day reporting and direct consultation with OB-GYNs when needed
What is Obstetric Scan for Biophysical Profile (BPP)?
Definition and Technology Used
A biophysical profile combines ultrasound imaging with cardiotocography (NST) to score five key parameters. Each parameter receives 0 or 2 points, for a maximum score of 10/10.
- Ultrasound waves create real-time images of your baby.
- Doppler flow studies may be added if blood-flow concerns exist.
BPP Ultrasound vs Nonstress Test
| Feature | BPP Ultrasound | Nonstress Test (NST) |
|---|---|---|
| Focus | Fetal movements & fluid | Heart-rate patterns |
| Duration | 20–30 min | 20–40 min |
| Combined? | Yes, for complete BPP | Done alongside ultrasound |
Types of Obstetric Scan for Biophysical Profile (BPP)
Complete BPP (Ultrasound + NST)
- 10-point scale (5 parameters × 2 points each)
- Preferred for high-risk pregnancies
Modified BPP (Ultrasound Only)
- 8-point scale (excludes NST)
- Used when time-sensitive or NST equipment unavailable
List of Parameters
| Parameter | What We Observe | Normal Findings |
|---|---|---|
| Fetal breathing movements | ≥1 episode lasting 30 sec in 30 min | 2 points |
| Gross body movements | ≥3 discrete limb or trunk movements | 2 points |
| Fetal tone | ≥1 episode of limb extension & flexion | 2 points |
| Amniotic fluid index (AFI) | Single deepest pocket ≥2 cm | 2 points |
| Nonstress test (NST) | ≥2 heart-rate accelerations in 20 min | 2 points |
Why This Test
- Monitor overdue pregnancies to decide on induction
- Track diabetes or hypertension impacts on placental function
- Follow-up abnormal Doppler or growth scans
When to Take Test
Gestational Age Guidelines
- 28–42 weeks: Optimal window for testing
- Weekly BPP after 37 weeks if high-risk
- Bi-weekly for moderate-risk cases
High-Risk Pregnancy Indicators
- Maternal diabetes or hypertension
- Overdue pregnancy >40 weeks
- Previous stillbirth or IUGR history
- Decreased fetal movements reported by mother
Benefits
Benefits of Taking the Obstetric Scan for Biophysical Profile (BPP)
- Early detection of fetal distress prevents stillbirth
- Non-invasive reassurance for anxious parents
- Guides timing of delivery—vaginal vs C-section
Illnesses Diagnosed with Obstetric Scan for Biophysical Profile (BPP)
- Oligohydramnios: Low amniotic fluid increasing cord compression risk
- Fetal growth restriction (IUGR): Baby smaller than gestational age
- Placental insufficiency: Reduced nutrient & oxygen transfer
Preparing for test
Clothing & Comfort Tips
- Wear two-piece outfit for easy belly exposure
- Bring a support person for reassurance
Scheduling with Full Bladder Notes
- Drink 500 ml water 30 min before if <34 weeks—improves image clarity
- Empty bladder if >34 weeks to enhance comfort
Pre-requisites Obstetric Scan for Biophysical Profile (BPP)
- Doctor’s referral specifying BPP urgency
- Previous scan reports (growth, Doppler, or anomaly scans)
Best Time to Take the Obstetric Scan for Biophysical Profile (BPP)
| Gestational Age | Recommended Frequency |
|---|---|
| 28–32 weeks | Only if specific risk factors |
| 32–36 weeks | Bi-weekly for moderate risk |
| 37–42 weeks | Weekly until delivery |
Eligibility
Singleton & Twin Pregnancies
- Both eligible, though twin BPP takes longer (two babies)
Contra-indications
- Active labor or ruptured membranes—test postponed
- Maternal infection requiring isolation
Procedure for Taking a Obstetric Scan for Biophysical Profile (BPP)
- Check-in at Cadabams Diagnostics front desk
- Lie semi-reclined on ultrasound couch
- Warm gel applied to abdomen
- Ultrasound probe captures 30-minute video clip
- NST sensors placed on belly to record heart-rate patterns
- Radiologist reviews images immediately; results shared same day
Caution Before Taking the Test
- Hydrate well 2 hours prior—improves amniotic fluid picture
- Have a light snack 15 min before scan to wake baby
- Take routine medications unless your doctor advises otherwise
Test Results
Results and Interpretations
| Finding/Observation | Description | General Interpretation/Significance | |
|---|---|---|---|
| BPP 8/8 or 10/10 | All parameters normal | Reassuring, continue routine care | |
| BPP 6/8 or 8/10 | One abnormal parameter | Repeat test in 24 hours | |
| BPP ≤4/8 or ≤6/10 | Multiple abnormalities | Consider delivery or further monitoring | |
Risks & Limitations
Common Concerns
- No radiation exposure—ultrasound is safe
- Mild discomfort from transducer pressure only
False-Positive Scenarios
- Sleeping baby may lower movement count; sugary snack or gentle stimulation resolves this.
- Dehydration can reduce amniotic fluid; re-scan after hydration often normalizes scores.
FAQs
Is BPP ultrasound painful?
No. The scan is painless; you may feel slight pressure from the probe.
How long does the test take?
Plan for 45–60 minutes, including ultrasound and NST.
Can I eat before the scan?
Yes, a light meal or snack can encourage fetal activity.
What if the score is low?
A low score triggers additional monitoring or possible early delivery decision in consultation with your doctor.
Does insurance cover BPP?
Most maternity insurance plans cover BPP when medically indicated. Cadabams Diagnostics provides cashless processing for major insurers.