Skip to content

Analyticaltests2ndtrimesterofpreg

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

A comprehensive blood test panel performed during weeks 13-27 of pregnancy to monitor maternal health and screen for potential complications.

Quick summary

{"Performed between pregnancy weeks 13-27","Screens for gestational diabetes, anemia, and infections","Helps ensure healthy pregnancy progression","Typically requires fasting for 8-12 hours before testing","Results guide prenatal care decisions"}

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

Key facts at a glance

LOINC
111532-8
Short code
Analytical tests 2nd trimester of preg
Synonyms
Analytical tests 2nd trimester of preg
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
7
Ref high
56
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84484
SNOMED
302773008
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 is this test?

Second trimester analytical tests refer to a group of blood tests performed during weeks 13 to 27 of pregnancy. These tests help healthcare providers monitor the mother's health and screen for conditions that could affect the pregnancy or the baby.

What tests are included?

The second trimester blood test panel typically includes: Complete Blood Count (CBC) to check for anemia and infection; Glucose Screening to detect gestational diabetes; Liver and Kidney Function tests; Thyroid Function tests; and Infectious Disease screening including Syphilis, Hepatitis B, HIV, and Rubella immunity. Some providers also include tests for iron levels and blood type verification.

How is the test performed?

A healthcare professional will draw a blood sample from a vein in your arm. The sample is then sent to a laboratory for analysis. For the glucose test, you may be asked to fast for 8-12 hours before having your blood drawn, and then drink a sugary solution for another blood test one hour later.

Are there any risks?

The risks are minimal and similar to any routine blood draw. You may experience slight bruising, soreness, or dizziness. These side effects typically resolve quickly.

Reference range

Adult males: 7-56 U/L; Adult females: 7-43 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Do I need to fast before this test?
For the glucose screening test, fasting for 8-12 hours is typically required. Other tests do not usually require fasting, but always follow your healthcare provider's specific instructions.
How long does it take to get results?
Most results are available within a few days to a week. Your healthcare provider will discuss the results with you at your next prenatal appointment.
What if my results are abnormal?
Abnormal results do not always indicate a serious problem. Your healthcare provider will interpret the results in context and may recommend additional testing or monitoring. Follow-up testing is common and often provides more clarity.
Is this test safe for my baby?
Yes, a blood test is completely safe for both you and your baby. It only involves drawing a small sample of maternal blood and does not pose any risk to the developing fetus.
How often are these tests done during pregnancy?
Second trimester tests are typically performed once between weeks 24-28. However, your healthcare provider may recommend additional testing based on your individual health situation and risk factors.
  1. 1
  2. 2
  3. 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.

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