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Test Code HCG or LAB143 HCG Quantitative, Serum or Plasma

Important Note

Patient Preparation: For 12 hours before this test do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins. Biotin can interfere with many immunoassay tests.

Specimen Requirements

Container Type:

Optimal: Gold or Mint*

*For STAT requests

Acceptable: Red or Green
Optimal Collection Volume: 

4.5mL; full tube
Minimum Volume:

1 mL whole blood
Collection Instructions:

Gently invert the sample 5-6 times after collection.
Specimen Transport:

Refrigerate
Processing Instructions: 

1. If serum, allow the specimen to clot for 30 minutes.

2. Centrifuge specimen within 2 hours of collection.

3. After centrifugation, specimen tubes without a gel barrier should have the serum or plasma aliquoted to a false bottom container.

4. Keep serum or plasma refrigerated until testing can be performed.

Specimen Stability

BMH

Specimen Type Temperature Time
Serum* Refrigerated 14 days
Room Temperature 5 days
Frozen 1 year

*Note: Heparinized plasma in gel separator tubes is less stable than serum and is only suitable for add-on testing up to 2 days following sample collection.

 

BBC, BLH, BSH

Specimen Type Temperature Time
Serum* Refrigerated 3 days
Frozen 1 year

*Note: Heparinized plasma in gel separator tubes is less stable than serum and is only suitable for add-on testing up to 2 days following sample collection.

Specimen Rejection Criteria

Hemolysis Mild OK; Moderate OK; Gross Reject
Lipemia Mild OK; Moderate OK; Gross Reject
Icterus Mild OK; Moderate OK; Gross Reject
Other Quantity not sufficient

Useful For

Pregnancy/gestation and tumor marker monitoring/detecting.

Methodology

Roche Cobas - Electrochemiluminescence assay

Reference Ranges

Male

< 5 mIU/mL

 

Female, Post-Menopausal

< 8 mIU/mL

 

Female, Pregnant

Full Weeks beginning with the start of Last Missed Menses Median Values (mIU/mL)
3 18
4 141
5 1,398
6 3,339
7 39,759
8 90,084
10 85,172
12 66,676
14 34,440
16 23,930
18 19,817

Interpretive

BHCG - Clinical & Interpretive: Beta-Human Chorionic Gonadotropin, Quantitative, Serum (mayocliniclabs.com)

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo, Battle Creek, Paw Paw, South Haven

Sample Retention Time

7 days

CPT Code

84702

LOINC Code

45194-8

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