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Human chorionic gonadotropin (hCG)

Human chorionic gonadotropin (hCG) is a placental hormone initially secreted by cells that surround an implanted embryo in pregnancy. Its primary role is to maintain the function of the corpus luteum during the first 3 to 4 months of pregnancy. The protein has many other roles including stimulating the onset of fetal gonadal steroidogenesis.

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20 Results
Name
Type
Format
Host/Source
Isotype
Tested Apps
Unit
Catalog
SDS
COA
Request Sample
MAb to hCG, Beta
Monoclonal
Purified
Mouse
IgG
N/A
MG
MKF05-148
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
N/A
MG
MAF05-023
hCG, Usp Grade
Antigen
Purified
Human Pregnancy Urine
N/A
N/A
MG
A01322H
hCG Alpha >=95% Pure
Antigen
Purified
Human
N/A
N/A
MG
A01377H
hCG Beta >= 98% Pure
Antigen
Purified
Human Pregnancy Urine
N/A
N/A
MG
A01278H
hCG Alpha >= 98% Pure
Antigen
Purified
Human Pregnancy Urine
N/A
N/A
MG
A01280H
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
EIA
MG
MAF05-020
hCG Beta >=95% Pure
Antigen
Purified
Human
N/A
EIA
MG
A01376H
hCG >=95% Pure
Antigen
Purified
Human
N/A
EIA
MG
A01378H
hCG
Antigen
Purified
Human Pregnancy Urine
N/A
EIA
MG
A38980H
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1
EIA, LF, Pr
MG
E86820M
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG2a
EIA, LF, Pr
MG
E86308M
MAb to hCG Alpha
Monoclonal
Purified
Mouse
IgG
EIA, Pr
MG
E86051M
MAb to hCG Alpha
Monoclonal
Purified
Mouse
IgG2b
LF, Pr
MG
E86082M
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
EIA, Pr
MG
MAF05-043
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1
LF
MG
E31586M
MAb to hCG Beta, Free
Monoclonal
Purified
Mouse
IgG1
EIA, Pr
MG
E01323M
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
EIA, Pr
MG
MAF05-025
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
EIA, Pr
MG
MAF05-627
MAb to hCG Beta
Monoclonal
Purified
Mouse
IgG1,k
EIA, Pr
MG
MAF05-019

Human chorionic gonadotropin (hCG)

Human chorionic gonadotropin (hCG) is a heterodimeric glycoprotein with an alpha subunit (identical to that of LH, FSH and TSH) and a unique β(beta)-subunit. The hormone is secreted as soon as the trophoblast implants in the uterine wall and it is at its highest concentration between the 7th and 10th weeks of pregnancy. The urine of women in the first month of pregnancy contains enough hCG to be detected by ELISA.

Total hCG is commonly used to confirm and monitor pregnancy, but it also has clinical utility in detecting miscarriages, preeclampsia, neoplasms, and trophoblastic diseases. Quantitative free β-hCG tests can also be used as tumor marker tests in gestational trophoblastic disease and in certain testicular tumors where the ratio of the free β subunit to intact hCG can be abnormally high. Free β-hCG may also have clinical utility in first-and second-trimester prenatal screening for Down syndrome and other chromosomal anomalies.

Diagnosis

Qualitative hCG assays are based on the two-site sandwich enzyme immunoassay principle typically using lateral flow technology and can detect hCG levels as low as 10 mIU/mL-100ml U/mL. They are prone to heterophile antibody interference, resulting in occasional false-positive results, and in rare cases, interference due to extremely high titers of antibodies to analyte-specific antibodies, streptavidin or ruthenium can occur.

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