Diagnostic Test Directory

Clinical Chemistry Laboratory

Total Beta HCG

  • Synonyms: Serum Pregnancy
  • LIS Mnemonic: TBHCG

    Collect

    Gold (SST - Clot activator & gel)

    Volume Required

    2 mL blood

    Minimum Required

    1 mL blood

    Transport

    Room temperature

    Stability

    8 hrs room temp, 5 days refrigerated

    Processing

    All chemistry specimens collected in a SST or PST should be centrifuged at 3,400 RPM's for 10 minutes. If there is gel separating the serum or plasma from the red cells, it is not necessary to transfer the serum or plasma to another tube. Follow directions in the centrifuge manual to set the centrifuge appropriately.If there is not gel separating the serum or plasma from the red cells, transfer the serum or plasma using a disposable pipette to another tube (pour off tube) being careful not to disturb the buffy coat. Rubber band the original tube (parent tube) with the labeled pour off tube prior to sending the specimen to CLS.

Days Performed

24/7

Reported

Next day

Reflex Testing

N/A

CPT

84702

Methodology

Chemiluminescence

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