Body Weight Percentile Adjusted for 25th Percentile (Body Composition Analysis)
This test evaluates how your body weight compares to typical weight ranges for your age and gender, adjusted for a reference 25th percentile. It helps assess growth patterns and overall body composition over time.
["Understanding your weight percentile helps track healthy growth and identify potential concerns early."]
Key facts at a glance
- LOINC
- 11771-3
- Short code
- [Prctl] Bdy weight.25th GA Corr
- Synonyms
- [Prctl] Bdy weight.25th GA Corr
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- estimated-pop-birth-wgt-gestational-age-corr-ref
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
This test calculates a standardized measure of your body weight relative to what is expected for your age and gender. It uses a reference population’s 25th percentile (the point below which 25% of children fall) to adjust your weight measurement. The result is expressed as a percentile score, indicating whether your weight is on track for your developmental stage.
How It’s Performed
Your height and weight are measured by a healthcare provider. The test uses these values along with standardized growth charts to compute your adjusted percentile. No additional blood, urine, or other specimens are required—this is typically done as part of a routine physical or growth assessment.
Why It Matters
Tracking weight percentiles helps monitor growth trends, especially in children and adolescents. It can signal potential issues like underweight or overweight if your percentile shifts significantly from previous measurements, prompting further evaluation by a healthcare professional.
Common Uses
Doctors use this test to monitor children’s growth during check-ups, evaluate nutritional needs, or assess conditions like growth hormone deficiencies or chronic illnesses that may affect weight. Adults may also use it to track long-term weight trends or body composition changes.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While percentiles provide a general trend, they are not diagnostic tools alone. They should be interpreted alongside other health metrics (e.g., body mass index, lab results) and clinical history. A healthcare provider will consider the context—such as age, activity level, and medical history—to determine if further action is needed.
Short name
Body Weight Percentile (Adjusted)
Frequently asked questions
How often should I expect this test?
Can this test detect obesity or malnutrition?
What if my percentile is low or high?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy