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Autodelfia hgh

Manufactured by PerkinElmer
Sourced in United Kingdom

The AutoDELFIA® hGH is a laboratory instrument designed for the measurement of human growth hormone (hGH) levels. It utilizes a time-resolved fluoroimmunoassay (TR-FIA) technology to quantify hGH concentrations in biological samples.

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8 protocols using autodelfia hgh

1

Endocrine Biomarker Measurement Protocol

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GH was measured by a two-site chemiluminescent immunometric assay (AutoDELFIA® hGH, PerkinElmer Life and Analytical Sciences, Wallac Oy), intra-assay CV: 5.3–6.5%, interassay CV: 5.7–6.2%, and sensitivity: up to 0.01 μg/l (0.026 mU/l).
IGF-1 was measured with the IMMULITE 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK); normal age-appropriate ranges are as follows: 1–6 years: 49–327 μg/l; 7–11 years: 57–551 μg/l; 12–13 years: 143–850 μg/l; 14–16 years: 220–996 μg/l; 17–18 years: 163–731 μg/l; 19–20 years: 127–483 μg/l; 21–35 years: 115–358 μg/l; 36–50 years: 94–284 μg/l; >50 years: 55–238 μg/l; intra-assay CV: 2.3–3.5%; interassay CV: 7.0–7.1%; and sensitivity: 20 μg/l. IGF-1 index = IGF − 1/upper limit of normal range (ULN) [24 (link)].
Insulin was measured by chemiluminescence immunoassay (ADVIA Centaur XP, Siemens, USA). BG was measured by a Hitachi 7600 Biochemical Analyzer (Tokyo, Japan). HbA1c was detected with high-performance liquid chromatography (Tosoh HLC-723 G8 HPLC Analyzer, Japan).
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2

Hormonal and Vascular Evaluation in Acromegaly

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Random GH, GH nadir (GHn) after 75 g OGTT, and IGF-1 levels were measured. GH was measured by a 2-site chemiluminescent immunometric assay (AutoDELFIA® hGH, PerkinElmer Life and Analytical Sciences, Wallac Oy, Finland). IGF-1 was measured using an Immulite 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK). The IGF-1 index was calculated as the ratio of the IGF-1 level/the upper limit of age-adjusted reference ranges (14 (link)). The criteria of endocrine remission was defined as the reduction of IGF-1 levels to age-adjusted normal ranges, random GH levels to<1.0 μg/L and GHn levels <0.4 μg/L after OGTT (15 (link)). Other adenohypophyseal hormones including thyroid-stimulating hormone (TSH), free thyroxine (FT4), morning free cortisol, follicle-stimulating hormone (FSH), luteinizing hormone (LH), total testosterone, and prolactin (PRL) were measured. The measurement of serum NO levels was performed to assess endothelium function using the Nitrate/Nitrite Colorimetric Assay kit (Cayman, Ann Arbor, MI).
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3

Biochemical Measures in Pediatric Growth Assessment

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BG was measured by Hitachi 7600 Biochemical Analyzer (Tokyo, Japan). Insulin was measured by the chemiluminescence immunoassay (ADVIA Centaur XP, Siemens, USA). HbA1c was detected with high-performance liquid chromatography (Tosoh HLC-723 G8 HPLC Analyzer, Japan).
GH was measured by a two-site chemiluminescent immunometric assay AutoDELFIA® hGH (PerkinElmer Life and Analytical Sciences, Wallac Oy), intra-assay CV: 5.3–6.5%, interassay CV: 5.7–6.2%, and sensitivity: up to 0.01 μg/l (0.026 mU/l).
IGF-1 was measured with IMMULITE 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK), with an age-specific normal range (1–6 years: 49–327 μg/l; 7–11 years: 57–551 μg/l; 12-13 years: 143–850 μg/l; 14–16 years: 220–996 μg/l; 17-18 years: 163–731 μg/l; 19-20 years: 127–483 μg/l; 21–35 years: 115–358 μg/l; 36–50 years: 94–284 μg/l; >50 years: 55–238 μg/l; intra-assay CV: 2.3–3.5%; interassay CV: 7.0–7.1%; sensitivity: 20 μg/l).
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4

Measurement of IGF-1 and GH Levels

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IGF-1 was measured with Immulite 2000 solid-phase, which is an enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK). The normal ranges were age-dependent (1–6 years: 49–327 μg/L; 7–11 years: 57–551 μg/L; 12-13 years: 143–850 μg/L; 14–16 years: 220–996 μg/L; 17-18 years: 163–731 μg/L; 19-20 years: 127–483 μg/L; 21–35 years: 115-358 μg/L; 36–50 years: 94–284 μg/L; and >50 years: 55–238 μg/L) [18 (link)]. The IGF-1 index, a parameter that describes the level of the IGF-1 based on age (defined as the ratio of IGF-1 value to the maximum of reference ranges), was calculated for all patients. GH was measured by a two-site chemiluminescent immunometric assay using AutoDELFIA® hGH (PerkinElmer Life and Analytical Sciences, Wallac Oy).
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5

Growth Hormone and IGF-1 Measurement

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GH was measured by a two-site chemiluminescent immunometric assay (AutoDELFIA hGH, PerkinElmer Life and Analytical Sciences, Boston, USA), and the intra-assay coefcient of variation (CV) was 5.3–6.5%, inter-assay CV was 5.7–6.2%, and sensitivity was up to 0.01 μg/L (0.026 mU/L). IGF-1 was measured with the Immulite 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, Marburg, Germany). The intra-assay CV was 2.3–3.5%; inter-assay CV, 7.0–7.1%; and sensitivity, 20 μg/L.
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6

Measurement of GH and IGF-1 Levels

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GH and IGF-1 were measured as described previously (78 (link)). Briefly, GH was measured by a two-site chemiluminescent immunometric assay (AutoDELFIA hGH, PerkinElmer Life and Analytical Sciences, Wallac Oy), with intraassay coefficient of variation (CV) of 5.3 to 6.5%, interassay CV of 5.7 to 6.2%, and sensitivity up to 0.01 μg/L (0.026 mU/L).
IGF-1 was measured with the Immulite 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK); normal age-appropriate ranges are as follows:1 to 6 years, 49 to 327 μg/L; 7 to 11 years, 57 to 551 μg/L; 12 to 13 years, 143 to 850 μg/L; 14 to 16 years: 220 to 996 μg/L; 17 to 18 years, 163 to 731 μg/L; 19 to 20 years, 127 to 483 μg/L; 21 to 35 years, 115 to 358 μg/L; 36 to 50 years, 94 to 284 μg/L; >50 years, 55 to 238 μg/L; intraassay CV, 2.3 to 3.5%; interassay CV, 7.0 to 7.1%; sensitivity, 20 μg/L. IGF-1 index = IGF-1/upper limit of normal range (ULN) (79 (link)).
Plasma glucose was measured by HITACHI 7600 Biochemical Analyzer (Tokyo, Japan).
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7

Measurement of GH and IGF-1 Levels

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GH and IGF-1 were measured as described previously (78 (link)). Briefly, GH was measured by a two-site chemiluminescent immunometric assay (AutoDELFIA hGH, PerkinElmer Life and Analytical Sciences, Wallac Oy), with intraassay coefficient of variation (CV) of 5.3 to 6.5%, interassay CV of 5.7 to 6.2%, and sensitivity up to 0.01 μg/L (0.026 mU/L).
IGF-1 was measured with the Immulite 2000 solid-phase, enzyme-labeled chemiluminescent immunometric assay (Siemens Healthcare Diagnostic Products Limited, UK); normal age-appropriate ranges are as follows:1 to 6 years, 49 to 327 μg/L; 7 to 11 years, 57 to 551 μg/L; 12 to 13 years, 143 to 850 μg/L; 14 to 16 years: 220 to 996 μg/L; 17 to 18 years, 163 to 731 μg/L; 19 to 20 years, 127 to 483 μg/L; 21 to 35 years, 115 to 358 μg/L; 36 to 50 years, 94 to 284 μg/L; >50 years, 55 to 238 μg/L; intraassay CV, 2.3 to 3.5%; interassay CV, 7.0 to 7.1%; sensitivity, 20 μg/L. IGF-1 index = IGF-1/upper limit of normal range (ULN) (79 (link)).
Plasma glucose was measured by HITACHI 7600 Biochemical Analyzer (Tokyo, Japan).
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8

Growth Hormone and IGF-1 Measurement

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GH levels were analyzed using a two-site chemiluminescence immunoassay (AutoDELFIA ® hGH, PerkinElmer Life and Analytical Sciences, Wallac Oy) with an intraand inter-assay variance of 5.3-6.5% and 5.7-6.2%, respectively, and a sensitivity of 0.01 μg/L. IGF-1 levels were analyzed using Immulite 2000 solid phase, enzymelabeled chemiluminescence immunoassay analysis (Siemens Medical Diagnostics Ltd., United Kingdom), with an intra-and inter-assay variance of 2.3-3.5% and 7.0-7.1%, respectively, and a sensitivity of 20 μg/L [21] . Normal age-appropriate ranges of IGF-1 for adults are:19-20 years, 127-483 μg/L; 21-35 years, 115-358 μg/L; 36-50 years, 94-284 μg/L; >50 years, 55-238 μg/L [22] .
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