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Human Chorionic Gonadotropin (hCG) Pregnancy Test (Qualitative)

Published: August 9, 2026Updated: August 17, 2026

This test detects the presence of human chorionic gonadotropin (hCG), a hormone produced after implantation of a fertilized egg in early pregnancy.

Quick summary

["A positive result suggests possible pregnancy; a negative result means no detectable hCG, which may indicate no pregnancy or too early for detection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
66563-8
Short code
Pregnancy test result PhenX
Synonyms
Pregnancy test result PhenX
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
Method
phenx
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 measures the concentration of hCG in your blood or urine. hCG is produced by the placenta after a fertilized egg implants in the uterus. It rises quickly in early pregnancy and can be detected by the test.

When Is This Test Typically Ordered?

Doctors order this test to confirm pregnancy, especially when symptoms like missed periods, nausea, or breast tenderness are present. It can also be used to monitor pregnancy progression or check for complications.

What Does a Positive or Negative Result Mean?

A positive result indicates the presence of hCG, which may mean you are pregnant. However, a false positive can occur in rare cases, such as certain medical conditions. A negative result means no detectable hCG, which could mean you are not pregnant or the test was taken too early.

What Are Common Causes of Abnormal Results?

False positives may occur in conditions like ectopic pregnancy, molar pregnancy, or certain medical treatments. False negatives can happen if the test was taken too early in pregnancy or if there are issues with specimen collection or handling.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

hCG Pregnancy Test (Qualitative)

Frequently asked questions

Why might my doctor have ordered this test?
Your doctor may have ordered this test to confirm pregnancy, especially if you are experiencing early symptoms. It can also be used in cases of suspected ectopic pregnancy, unexplained bleeding, or when monitoring high-risk pregnancies.
How soon after conception can this test detect pregnancy?
This test can often detect pregnancy as early as 7–10 days after conception, but results may vary based on the method used (blood or urine) and individual circumstances.
What should I do if my test result is positive?
If your test result is positive, schedule a follow-up with your healthcare provider to confirm the pregnancy and discuss next steps, such as scheduling an ultrasound or continuing prenatal care.
  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 17, 2026. · Read our editorial policy