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Test Code LAB437 HCG Urine

Clinical System Name

hCG, Urine Pregnancy Test

Sample Requirements

Specimen: Urine

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

Preferred Vol:  1.0 mL

Minimum Vol:  0.5 mL


Notes:  First morning urine specimens preferred; random samples okay.

Processing Instructions

Deliver urine to Core Lab Urinalysis Bench.

Reject due to:  Non-sterile container (give to Core Lab for determination), insufficient quantity, age of specimen

Spin: N

Aliquot: N

Storage location:  Core 5 Fridge


Off-site collection: Ship refrigerated.


Specimen Type Temperature Time
Urine RT

≤ 8 h

Urine 2-8 C

≤ 48 h

Urine -20 C or -70 C

≤ 6 m


STAT Performed TAT
Y 24/7 20 min

Performing Laboratory

Seattle Children's Laboratory    


Department:  Core Chemistry

Phone Number: 206-987-2617 (Client Services)


Method:  Immunochromatographic method for qualitative detection

Analytical Volume:  0.135 mL urine

Reference Range

Lower limit of test sensitivity is 20 mIU/mL hCG


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 people, making the detection of hCG in these fluids an excellent marker for confirming pregnancy. The test utilizes monoclonal and polyclonal antibodies to hCG.


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

CPT Code