Weight gain during pregnancy assessment (qualitative or calculated index of weight change)
This test helps track how much weight you’ve gained during your pregnancy, which is important for monitoring your health and your baby’s growth.
["Understanding your weight gain helps ensure healthy development for both you and your baby."]
Key facts at a glance
- LOINC
- 56078-9
- Short code
- Wt gain during current pregnancy
- Synonyms
- Wt gain during current pregnancy
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Critical range
- 0.5 N/A – —
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
Why Weight Gain Matters During Pregnancy
Healthcare providers use pregnancy weight gain as a key indicator of how well your pregnancy is progressing. Excessive or insufficient weight gain can signal potential health risks, such as gestational diabetes, high blood pressure, or preterm labor. Your doctor may recommend this assessment to guide lifestyle adjustments, nutrition, or medical care as needed.
How This Test Works
This test does not involve a blood draw or specific lab measurement of a single substance. Instead, it is a qualitative or calculated assessment based on your recorded weight before pregnancy and your current weight. Your healthcare provider will compare these values to determine your weight gain over time.
What to Expect Before the Test
You won’t need to prepare for this test—it’s based on your documented weight history. Your doctor or midwife will review your pregnancy weight progression during your regular prenatal visits.
What the Results Mean
Results are interpreted by your healthcare provider based on your individual health, pregnancy stage, and recommended weight gain guidelines. They may flag concerns if your weight gain is too rapid or too slow, prompting further evaluation or adjustments to your care plan.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Pregnancy weight gain evaluation
Frequently asked questions
How is this test used in pregnancy care?
What if my weight gain is outside the expected range?
Does this test require fasting or special preparation?
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 17, 2026. · Read our editorial policy