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Body Weight Percentile Based on Age-Adjusted Body Measurements (50th Percentile Correction)

Published: August 9, 2026Updated: August 16, 2026

This test evaluates whether your body weight relative to your height falls near the 50th percentile for your age, using standardized growth charts. It helps assess growth patterns and potential weight-related concerns in children.

Quick summary

["This test helps track healthy growth by comparing your weight to expected growth standards for your age."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
11772-1
Short code
[Prctl] Bdy weight.50th GA Corr
Synonyms
[Prctl] Bdy weight.50th 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

The test calculates your body weight percentile by adjusting for age-specific measurements (such as height, weight, and sometimes body composition indicators). It compares your weight to the median (50th percentile) of children of the same age in standardized growth data, accounting for variations in growth trends over time.

Why It’s Done

Healthcare providers may use this test to monitor growth in children, especially if there are concerns about underweight, overweight, or atypical growth patterns. It can help identify early signs of growth delays or excess weight that may require medical attention.

How It’s Performed

No special preparation is needed. Your height and weight will be measured directly, and the test uses pre-existing age-adjusted growth data to calculate the percentile. No blood, urine, or other bodily fluids are collected for this test.

What the Results Mean

A percentile of 50 means your weight is average for your age. Percentiles below 50 may indicate slower growth, while those above may suggest faster growth or excess weight. Results are interpreted in the context of your overall health and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Why might my child’s test results be different from what I expected?
Your child’s results may vary based on factors like age, genetics, activity level, and overall health. Growth is not linear, and small fluctuations in percentile are normal. Always discuss any concerns with your healthcare provider, who can provide personalized insights.
How often should I expect this test to be done?
This test is typically done during regular pediatric checkups, often as part of routine growth monitoring. The frequency depends on your child’s age, health status, and any identified growth concerns. Your provider will determine the next steps based on your results.
Can diet or activity affect this test result?
Yes, diet, physical activity, and overall health can influence growth patterns. A balanced diet, regular exercise, and proper medical care play key roles in supporting healthy growth. If your child’s results are concerning, your provider may recommend lifestyle adjustments or additional testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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