Effect of repeated freeze - Thaw cycles on maternal serum biological markers for the detection of fetal trisomies

Clinical Biochemistry

Volumn 30, Issue 7, 1997, Pages 527-530

  Massé, Jacques ^a   Forest, Jean Claude ^a   Moutquin, Jean Marie ^a   Degrandpré, Pierre ^a  

^a UNIVERSITÉ LAVAL   (Canada)

Author keywords

Alpha fetoprotein; Down syndrome; Free human chorionic gonadotropin; Stability; Unconjugated estriol

Indexed keywords

ALPHA FETOPROTEIN; CHORIONIC GONADOTROPIN BETA SUBUNIT; ESTRIOL;

ARTICLE; BLOOD ANALYSIS; BLOOD STORAGE; CLINICAL ARTICLE; DOWN SYNDROME; FEMALE; HORMONE DETERMINATION; HUMAN; MATERNAL BLOOD; PRENATAL DIAGNOSIS; PRIORITY JOURNAL; THAWING; TRISOMY 21;

ALPHA-FETOPROTEINS; ANALYSIS OF VARIANCE; BIOLOGICAL MARKERS; CHORIONIC GONADOTROPIN; DOWN SYNDROME; ESTRIOL; FEMALE; FREEZING; HEAT; HUMANS; PREGNANCY; PREGNANCY TRIMESTER, SECOND; PRENATAL DIAGNOSIS;

EID: 0030707756     PISSN: 00099120     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0009-9120(97)00095-7     Document Type: Article

References (18)

1. Wald NJ, Kennard A, Densem JW, Cuckle HS, Chard T, Butler L. Antenatal maternal serum screening for Down's syndrome results of a demonstration project . Br Med J. 305:1992;391-394.
2. Palomaki GE, Haddow JE, Beauregard LJ. Prenatal screening for Down's syndrome in Maine, 1980 to 1993. N Engl J Med. 334:1996;1409-1410.
3. Goodburn SF, Yates JRW, Raggatt PR, et al. Second trimester maternal serum screening using alpha-fetoprotein, human chorionic gonadotropin, and unconjugated oestriol experience of a regional programme . Prenat Diagn. 14:1994;391-402.
4. Forest JC, Massé J, Rousseau F, Moutquin JM, Bélanger M, Brideau NA. Screening for Down syndrome during the first and second trimesters impact of risk estimation parameters . Clin Biochem. 28:1995;443-449.
5. Wald N, Cuckle HS, Densem JW, et al. Maternal serum screening for Down's syndrome in early pregnancy. Br Med J. 297:1988;883-887.
6. Wald N, Densem J, Stone R, Cheng R. The use of free β-hCG in antenatal screening for Down's syndrome. Br J Obstet Gynaecol. 100:1993;550-557.
7. Forest JC, Massé J, Moutquin JM. Screening for Down syndrome during the first trimester a prospective study using free β-human chorionic gonadotropin and pregnancy-associated plasma protein A . Clin Biochem. 30:1997;333-338.
8. Knight GJ, Cole LA. Measurement of choriogonadotropin free β-subunit an alternative to choriogonadotropin in screening for fetal Down's syndrome? Clin Chem. 37:1991;779-782.
9. Wald NJ, Densem JW, Stone R, Cheng R. The use of free β-hCG in antenatal screening for Down's syndrome. Br J Obstet Gynaecol. 101:1994;176-177.
10. Spencer K, Macri JN, Carpenter P, Anderson R, Krantz DA. Stability of intact chorionic gonadotrophin (hCG) in serum, liquid whole blood, and dried whole-blood filter-paper spots impact on screening for Down syndrome by measurement of free β-hCG subunit . Clin Chem. 39:1993;1064-1068.
11. Spencer K, Macri JN. The use of free β-hCG in antenatal screening for Down's syndrome. Br J Obstet Gynaecol. 101:1994;175-176.
12. Lantz ME, O'Brien WF, Williams MC. The effect of sample preparation and storage on maternal triple-marker screening. Obstet Gynecol. 85:1995;919-923.
13. Cole LA, Kardana A, Park SY, Braunstein GD. The deactivation of hCG by nicking and dissociation. J Clin Endocrinol Metab. 76:1993;704-710.
14. Strickland TW, Puett D. The kinetic and equilibrium parameters of subunit association. J Biol Chem. 257:1982;2954-2960.
15. Mizouchi T, Nishimura R, Taniguchi T, Kobata A. Comparison of carbohydrate structures between human chorionic gonadotropin present in urine of patients with trophoblastic disease and healthy individuals. Jpn J Cancer Res. 76:1985;752-759.
16. Matthews JNS, Altman DG, Campbell MJ, Royston P. Analysis of serial measurements in medical research. BMJ. 300:1990;230-235.
17. Kardana A, Cole LA. Polypeptide nicks cause erroneous results in assays of human chorionic gonadotropin free β-subunit. Clin Chem. 38:1992;26-33.
18. de Medeiros SF, Amato F, Norman RJ. Stability of immunoreactive β-core fragment of hCG. Obstet Gynecol. 77:1991;53-59.