: Pregnancy Test (Function/Knowledge-Based Interpretation)
: A pregnancy test detects the hormone human chorionic gonadotropin (hCG) to help determine whether a person is pregnant. The "function/knowledge" aspect refers to understanding what the result means rather than a specific specimen or method.
[": A pregnancy test looks for hCG, a hormone produced during pregnancy, and results should be interpreted with your clinician's guidance."]
Key facts at a glance
- LOINC
- 46865-2
- Short code
- PREGNANCYFUNCTIONKNOWLEDGE
- Synonyms
- —
- 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
- observed-omaha
- 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
: This test checks for human chorionic gonadotropin (hCG), a hormone that rises after a fertilized egg implants in the uterus. Because the slug does not specify a specimen or method, this describes the general concept of pregnancy testing rather than one exact laboratory technique.
: How the Test Is Used
: Pregnancy testing is used to confirm or rule out pregnancy, often when a period is missed or before certain medical procedures and treatments. It may also be used to monitor early pregnancy in some situations.
: Understanding Your Results
: A positive result generally indicates that hCG was detected and suggests pregnancy. A negative result generally means hCG was not detected, but testing too early, dilute urine, or certain medications can affect accuracy. Your clinician will interpret results alongside your history and symptoms.
: What to Do Next
: If you have a positive or unexpected result, or symptoms such as pain or bleeding, contact your healthcare provider. They can confirm the result, discuss timing, and recommend follow-up testing or care as needed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
: Pregnancy testing is clinically important for confirming pregnancy, guiding care decisions, and supporting early prenatal management. Results should always be interpreted by a healthcare professional in the context of symptoms, timing, and any confirmatory testing, since the specific specimen and method are not defined here.
Short name
: NONE
Frequently asked questions
: Can a pregnancy test be wrong?
: When is the best time to take a pregnancy test?
: Does a positive result always mean a viable pregnancy?
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