Alpha-fetoprotein tumor marker, serum

Alphabetical Test listing

Alpha-fetoprotein tumor marker, serum-20

Alpha-fetoprotein tumor marker, serum
Tumor marker
Alpha fetoprotein

The test method changed on 1/3/2023. If this test has been used for serial monitoring, rebaselining is recommended. Rebaselining consists of 2 measurements, collected 3-6 weeks apart.
The Roche Elecsys CEA assay is an electrochemiluminescence immunoassay "ECLIA" performed on the Roche Cobas "e" immunoassy analyzers.
Values obtained with different assay methods may be different and cannot be used interchangeably.


Not for pregnant females

Biotin supplements may cause clinically significant interference for this test assay. If interference is suspected, it is strongly recomended that biotin is discontinued for at least one week prior to retesting.

1.0 mL
0.5 mL

Immediatley following collection, mix sample by inverting 5 times

  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within two (2) hours of sample collection


  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a False bottom plasma/serum transport vial/tube (AHL), labelled as serum, within two (2) hours of sample collection

Gold serum separator (SST) tube

False bottom plasma/serum transport vial/tube (AHL)

Lithium heparin (Li hep) plasma

Immediately follow collection, mix sample by inverting 8 - 10 times to prevent clotting


Spin within two (2) hours of sample collection



Lt green plasma separator (PST)



Refrigerated (preferred) - 14 days

Ambient - 5 days

Frozen - 6 months

  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Improper anticoagulant or ratio
  • Delay in transport
  • Improper storage temperature affecting results
  • Inappropriate timing of collection
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)
AHL - Chemistry: C
Mo - Sa
2 days

Electrochemiluminescence immunoassay (ECLIA)


≤ 8.3 ng/mL