A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
hCG with Gestational Table
Test Code19485
CPT Codes
84702
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days
Reference Range
Gestational Age |
Expected hCG Values (mIU/mL) |
<1 Week | 5-50 |
1-2 Weeks | 50-500 |
2-3 Weeks | 100-5000 |
3-4 Weeks | 500-10000 |
4-5 Weeks | 1000-50000 |
5-6 Weeks | 10000-100000 |
6-8 Weeks | 15000-200000 |
2-3 Months | 10000-100000 |
The table above provides only a very rough estimate of gestational age and should be used only in conjunction with other methods for establishing gestational age. Much more reliable and accurate estimations of gestational age may be obtained by using LMP or ultrasound.
Clinical Significance
hCG may reach detectable limits within 7-10 days of conception. hCG is produced by the placenta and reaches a peak between the 7th and 10th week of gestation. hCG is a glycoprotein hormone produced by the syncytiotrophoblast of the placenta and secreted during normal pregnancy and with pathologic conditions such as hydatidiform mole, choriocarcinoma and testicular neoplasm. Order hCG, Total, Qualitative, Urine if hCG serum result is inconsistent with clinical presentation.
Performing Laboratory
Quest Diagnostics Nichols Institute |
14225 Newbrook Drive |
Chantilly, VA 20153 |