1999
DOI: 10.1002/(sici)1097-0223(199901)19:1<85::aid-pd459>3.0.co;2-e
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Stability of free β-subunit in routine practice for trisomy 21 maternal serum screening

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Cited by 10 publications
(3 citation statements)
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“…It has been suggested that the concentration of PlGF increases with storage time and free β‐hCG might not be stable under ambient and refrigerator temperatures . Therefore, in order to check if the concentration of these markers were affected by long‐term frozen storage, the assay results of PAPP‐A of the frozen samples were compared with those from the original fresh samples.…”
Section: Methodsmentioning
confidence: 99%
“…It has been suggested that the concentration of PlGF increases with storage time and free β‐hCG might not be stable under ambient and refrigerator temperatures . Therefore, in order to check if the concentration of these markers were affected by long‐term frozen storage, the assay results of PAPP‐A of the frozen samples were compared with those from the original fresh samples.…”
Section: Methodsmentioning
confidence: 99%
“…In a ®rst study (Muller et al, 1999), we demonstrated that transport, as such, did not have any signi®cant difference on the screening test results. In this study, we wanted to check whether the two remaining pitfalls (identity error and splitting due to contamination) could be prevented by collecting the specimen in a sterile tube without any anticoagulant and with separating gel, centrifuging within 2 h and by leaving the tube stoppered until it reached the testing laboratory.…”
Section: Letter To the Editormentioning
confidence: 67%
“…διμερούς μορίου της ανθρώπινης χοριακής γοναδοτροπίνης (hCG) ή τη διάσταση του μορίου στις υπομονάδες α και β [11][12][13][14][15], καθώς και τη μετατόπιση των ζωνών ηλεκτροφόρησης της ανασυνδυασμένης ερυθροποιητίνης (rEPO) [16][17][18]. Επίσης τα τελευταία τέσσερα χρόνια, την επιστημονική κοινότητα αντι-ντόπινγκ έχουν απασχολήσει τα πρωτεολυτικά ένζυμα ή πρωτεάσες, τα οποία μπορεί να εισαχθούν σκόπιμα από τους αθλητές στα δείγματα ούρων, κατά τη διαδικασία συλλογής τους, προκειμένου να καλυφθεί η κατάχρηση απαγορευμένων ουσιών πρωτεϊνικής βάσης, όπως της rEPO, της hCG και ινσουλινών [19][20][21][22][23][24].…”
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