Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1993-10-14
pubmed:abstractText
Free beta-HCG is a new analyte that has been suggested to be superior to total HCG when used in combination with alpha-fetoprotein (AFP) for Down syndrome risk screening in early pregnancy. We have evaluated this claim on 21 samples collected from Down syndrome pregnancies and 180 samples from unaffected pregnancies. The detection rates for the combination of AFP with free beta-HCG or the combination of AFP with total HCG were identical (71 per cent) but the initial screen positive rate (equivalent to the false-positive rate) was 7.5 per cent for AFP + free beta-HCG screening compared with 3.5 per cent for AFP + total HCG screening. We conclude that the case for free beta-HCG is unproven and suggest that further data be collected before free beta-HCG becomes acceptable.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0197-3851
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
535-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
A comparison of total and free beta-HCG assays in Down syndrome screening.
pubmed:affiliation
Medical Biochemistry Department, University Hospital of Wales, Health Park, Cardiff, U.K.
pubmed:publicationType
Journal Article, Comparative Study