Sign in →

Test Code HCGQNT HCG, Quantitative, Pregnancy, LAB143

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements

Container/Tube:

Preferred: Green-top (lithium heparin) tube

Acceptable: Gold-top serum gel tube or plain red-top tube

Specimen Volume: 0.2 mL plasma or serum

Stability: Sample should be kept at 2 – 8 °C and analyzed within 7 days. For longer storage,

                samples may be frozen at -20 °C.

Collection Instructions:

Note: 1. Human anti-mouse antibodies or other heterophile antibodies may be present in patient specimens. This assay has been specially formulated to minimize the effects of these antibodies, however results from patients known to have these antibodies should be carefully evaluated.
2. Even though this test is sometimes used to follow the course of therapy for tumors, no β-HCG method has been approved by the FDA for use as a tumor marker.

 

 

 

Reference Values

Males

0-3 mIU/mL

Females

Non-pregnant: 0-3 mIU/mL

Borderline: 4-25 mIU/mL

 

HCG ranges during normal pregnancy are summarized below:

 

Approximate Gestational

Age (weeks)

Approximate hCG

Range (mIU/mL)

0.2 – 1

     5 – 50

             1 – 2

     50 – 500

             2 – 3

     100 – 5,000

             3 – 4

     500 – 10,000

             4 – 5

     1,000 – 50,000

             5 – 6

10,000 – 100,000

             6 – 8

15,000 – 200,000

8 – 12

10,000 – 100,000

 

Useful For

The hormone is an excellent marker for pregnancy. Healthy, non-pregnant individuals have low
(<5 mIU/mL) to undetectable hCG in serum. During pregnancy, hCG concentrations increase as noted above and then show a gradual decrease after the first trimester. Unusually low or rapidly declining levels may indicate an abnormal condition such as an ectopic pregnancy or impending spontaneous abortion.

Day(s) Test Set Up

Monday through Sunday

Methodology

Chemiluminescence

Test Classification and CPT Coding

84702