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4. A sensitive competitive protein binding assay for vitamin D in plasma. Horst RL; Reinhardt TA; Beitz DC; Littledike ET Steroids; 1981 May; 37(5):581-91. PubMed ID: 6266082 [TBL] [Abstract][Full Text] [Related]
5. [Simultaneous radiocompetitive assay for 25 hydroxyvitamin D and 24, 25 dihydroxyvitamin D in human serum (author's transl)]. Guillemant S; Kremer R; Camus JP; Desgrez P Ann Endocrinol (Paris); 1979; 40(1):75-6. PubMed ID: 443744 [TBL] [Abstract][Full Text] [Related]
6. Measurement of vitamin D metabolites in anephric subjects. Jongen MJ; van der Vijgh WJ; Lips P; Netelenbos JC Nephron; 1984; 36(4):230-4. PubMed ID: 6608697 [TBL] [Abstract][Full Text] [Related]
7. Extra-renal production of 24,25-dihydroxyvitamin D in chronic renal failure during 25 hydroxyvitamin D3 therapy. Zerwekh JE; McPhaul JJ; Parker TF; Pak CY Kidney Int; 1983 Feb; 23(2):401-6. PubMed ID: 6601738 [No Abstract] [Full Text] [Related]
8. Measurement of 25-hydroxyvitamin D3 in serum. Bouillon R; Kerkhove PV; De Moor P Clin Chem; 1976 Mar; 22(3):364-8. PubMed ID: 3295 [TBL] [Abstract][Full Text] [Related]
9. 25-hydroxyvitamin D2, 25-hydroxyvitamin D3 and total 24,25-dihydroxyvitamin D in human serum. Parviainen MT; Savolainen KE; Alhava EM; Mäenpää PH Ann Clin Res; 1981 Feb; 13(1):26-33. PubMed ID: 6972726 [TBL] [Abstract][Full Text] [Related]
10. 1,25-Dihydroxyvitamin D in biological fluids: a simplified and sensitive assay. Eisman JA; Hamstra AJ; Kream BE; DeLuca HF Science; 1976 Sep; 193(4257):1021-3. PubMed ID: 1085035 [TBL] [Abstract][Full Text] [Related]
12. The estimation of vitamin D and some metabolites in human plasma by mass fragmentography. Seamark DA; Trafford DJ; Makin HL Clin Chim Acta; 1980 Sep; 106(1):51-62. PubMed ID: 6250743 [TBL] [Abstract][Full Text] [Related]
13. High-performance liquid chromatography of 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3 in human plasma. Use of isotachysterols and a comparison with gas chromatography--mass spectrometry. Trafford DJ; Seamark DA; Turnbull H; Makin HL J Chromatogr; 1981 Dec; 226(2):351-60. PubMed ID: 6976351 [TBL] [Abstract][Full Text] [Related]
15. Assay for plasma 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3 by "high-performance" liquid chromatography. Dabek JT; Härkönen M; Wahlroos O; Adlercreutz H Clin Chem; 1981 Aug; 27(8):1346-51. PubMed ID: 6974062 [TBL] [Abstract][Full Text] [Related]
16. Plasma 1,25(OH)2 vitamin D measured by radioimmunoassay and cytosol radioreceptor assay in normal subjects and patients with primary hyperparathyroidism and renal failure. Peacock M; Taylor GA; Brown W Clin Chim Acta; 1980 Feb; 101(1):93-101. PubMed ID: 7357741 [TBL] [Abstract][Full Text] [Related]
17. Absence of seasonal variation in serum concentrations of 1,25-dihydroxyvitamin D despite a rise in 25-hydroxyvitamin D in summer. Chesney RW; Rosen JF; Hamstra AJ; Smith C; Mahaffey K; DeLuca HF J Clin Endocrinol Metab; 1981 Jul; 53(1):139-42. PubMed ID: 6972382 [TBL] [Abstract][Full Text] [Related]
18. Simultaneous determination of 25-hydroxyvitamin D, 24,25-dihydroxyvitamin D, and 1,25-dihydroxyvitamin D in plasma or serum. Jongen MJ; van der Vijgh WJ; Willems HJ; Netelenbos JC; Lips P Clin Chem; 1981 Oct; 27(10):1757-60. PubMed ID: 6974618 [TBL] [Abstract][Full Text] [Related]
19. A method for simultaneous determination of 25-hydroxyvitamin D2 and 25-hydroxyvitamin D3 in human plasma by using two steps of high-performance liquid chromatography. Okano T; Mizuno N; Shida S; Takahashi N; Kobayashi T; Kuroda E; Kodama S; Matsuo T J Nutr Sci Vitaminol (Tokyo); 1981; 27(1):43-54. PubMed ID: 6974771 [TBL] [Abstract][Full Text] [Related]