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Pregnancy Risk Screening Test (Qualitative hCG)

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

This test checks for human chorionic gonadotropin (hCG), a hormone produced during pregnancy. It helps determine if you may be pregnant.

Quick summary

["A simple blood or urine test to check for early pregnancy signs."]

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

Key facts at a glance

LOINC
42838-3
Short code
PREGNANCYRISK
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
3.5
Ref high
5
Critical range
2.5 N/A – 6.5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
observed-ccc
CPT
84132
SNOMED
110742001
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 Does This Test Measure?

The test detects the presence of **human chorionic gonadotropin (hCG)**, a hormone that appears in the blood or urine after implantation of a fertilized egg. Low levels may indicate an early pregnancy, while very low or absent levels could suggest no pregnancy or an ectopic pregnancy.

How Is the Test Performed?

This test can be done using either a blood sample (taken from a vein) or a urine sample at home or in a lab. Blood tests are often used for early detection, while urine tests are simpler and can be done at home.

When Might You Need This Test?

You may need this test if you have missed menstrual periods, have unusual vaginal bleeding, or suspect pregnancy after sexual activity. Doctors also recommend it for women with irregular cycles or those at higher risk of pregnancy complications.

What Are Possible Results?

A positive result means hCG is present, suggesting a possible pregnancy. A negative result means no detectable hCG, indicating no pregnancy or an early miscarriage. Follow-up testing may be needed for unclear results.

Reference range

Adult: 3.5-5.0 mmol/LN/A

Specimen: serum

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

hCG Screen

Frequently asked questions

Why is this test important?
This test is crucial for early pregnancy confirmation and helps monitor conditions like ectopic pregnancies, miscarriages, or molar pregnancies. It also supports reproductive health decisions and follow-up care.
What if my result is positive?
A positive result means you may be pregnant. Your healthcare provider will likely schedule additional tests (like a transvaginal ultrasound) to confirm the pregnancy’s location and viability.
What if my result is negative?
A negative result means no pregnancy is detected at this time. If you suspect pregnancy, retest after a few days or consult your doctor for further evaluation.
  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