Skip to content

Amniotic Fluid Turbidity Measurement

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

This test measures the cloudiness (turbidity) of amniotic fluid, which may indicate the presence of cells, proteins, or other substances. It’s often used during pregnancy to assess fetal well-being or identify potential complications.

Quick summary

["Turbidity in amniotic fluid can signal health concerns that require further medical evaluation."]

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

Key facts at a glance

LOINC
33326-0
Short code
Turbidity Amn Ql
Synonyms
Turbidity Amn Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
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 Is This Test Done?

Your healthcare provider may order this test if you’re at risk for conditions like preterm labor, fetal infections, or other pregnancy-related issues. Turbidity can sometimes reflect inflammation, bleeding, or other abnormalities that need monitoring.

How Is the Test Performed?

Amniotic fluid is collected through an amniocentesis procedure, where a small sample is taken from the amniotic sac. The fluid is then analyzed for turbidity using specialized equipment to detect cloudiness or particles.

What Might Abnormal Results Mean?

Higher-than-normal turbidity could suggest conditions like fetal hemorrhage, infection, or preterm rupture of membranes. Lower turbidity might indicate normal fluid composition, but results should always be interpreted by a healthcare provider in context.

When Will You Get Results?

Results are typically available within a few days after the procedure. Your doctor will discuss them with you during a follow-up visit.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Amniotic fluid turbidity is a non-invasive way to monitor fetal health during pregnancy. Elevated turbidity may prompt additional tests, such as cultures or ultrasounds, to investigate potential causes like infection or bleeding.

Short name

Amniotic Fluid Turbidity

Frequently asked questions

What causes amniotic fluid turbidity to increase?
Amniotic fluid turbidity may increase due to fetal cells, proteins, or substances from bleeding, infection, or preterm labor. Your doctor will consider your medical history and other test results to determine the cause.
Is this test painful?
The procedure itself involves a small needle inserted into the abdomen, which may cause mild discomfort. You’ll likely receive local anesthesia to minimize pain. Recovery is usually quick, and most women return to normal activities soon after.
Can I eat or drink before the test?
You may eat and drink normally before the test unless your doctor advises otherwise. Follow any specific instructions they provide, as they may vary based on your health or the reason for the test.
  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