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Test Code HCG U HCG Urine

Clinical System Name

hCG, Urine Pregnancy Test

Description

The urine hCG test is a rapid immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in urine or serum as an aid in the early determination of pregnancy. hCG is a glycoprotein hormone secreted by the developing placenta. After fertilization, the concentration of hCG rapidly rises in both the urine and serum of pregnant women, making the detection of hCG in these fluids an excellent marker for confirming pregnancy. The test utilizes monoclonal and polyclonal antibodies to hCG.

Sample Requirements

Specimen: Urine

Container(s):  Sterile Screw-Capped Container, Sterile Screw-Capped Tube or Syringe.

Preferred Vol:  1.0 mL

Minimum Vol:  1.0 mL

 

Notes:  First a.m. urine specimens preferred; random samples OK.

Processing Instructions

Reject due to:  Non-sterile container, insufficient quantity, age of specimen

Spin: N

Aliquot: N

Temp:  2-8oC

Storage location:  Deliver urine to Core Lab Urinalysis Bench.

 

Off-site collection: Ship refrigerated.

Stability

 

Specimen Type Temperature Time
Urine RT

8 hrs.

Urine 2-8oC

48 hrs.

Urine -20oC or -70oC

 6 mo.

 

Availability

STAT Performed TAT
Y 24/7 20 min

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Core Chemistry

Phone Number: 206-987-2617

 

 

Reference Range

lower limit of test sensitivity is 20 mIU/mL hCG

Methodology

Method:  Immunochromatographic method for qualitative detection

 

Analytical Volume:  0.135 mL urine

Limitations

Dilute urines (specific gravity <1.010) may not contain representative urinary HCG concentrations.