hCG with Gestational Table

Test Code

19485

CPT Code(s)

84702

CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

Test Code

19485

CPT Code(s)

84702

CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano | Quest Nichols Institute -San Juan Capistrano, CA. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

hCG with Gestational Table - 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.

Test Resources

Test FAQ

Serum Pregnancy Tests

Test Details

Methodology

Immunoassay (IA)

Reference Range(s)

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.

LOINC® Codes, Performing Laboratory

Service Area must be determined

Methodology

Immunoassay (IA)

Reference Range(s)

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

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.3 mL

Transport Container

Serum separator tube (SST)

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.3 mL

Transport Container

Serum separator tube (SST)

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Setup Schedule

Service Area must be determined

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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