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measure Urinary osmolality
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Urinary osmolality was measured with a density test (specific gravity) using the Atago refractometer PAL-10S BLT/A+W (Atago, Tokyo, Japan). The refractive index is a ratio of the velocity of light in air to the velocity of light in solution, which is directly proportional to the number of dissolved solids in urine.Created October 17, 2024 • Updated October 20, 2024 -
measure Buccal swab
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18Buccal swabs are collections of buccal cell scrapings obtained by rubbing buds along the inside of the mouth.Created October 17, 2024 • Updated October 20, 2024 -
measure Handedness and hand preference
Study: Netherlands Twin Register Mode of collection: SelfAdministeredQuestionnaire Available measurements: Young Netherlands Twin Register YS_2 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS1 YC_BS2 YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG12 YE_COG18 YS_TRIP age 2 YS_TRIP age 1-2Self-reported handedness or hand preference of self or family members was assessed.Created October 17, 2024 • Updated October 20, 2024 -
measure LC-MS amines
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Liquid chromatography mass spectrometry (LC-MS) platform targeting amines.Created October 17, 2024 • Updated October 20, 2024 -
measure Neuropeptides
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Neuropeptides, including Substance P, Beta-endorphin, Dynorphin A, neurotensin, and Leu-enkaphalin, were measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure Genotyping (array)
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YC_ADHMRI YE_COG18Assessment of single nucleotide polymorphisms (SNPs) as obtained through genotyping arrays.Created October 17, 2024 • Updated October 20, 2024 -
measure LC-MS steroid hormones
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB2 YC_ACTION - BB3 YC_BS1Liquid chromatography mass spectrometry (LC-MS) platform targeting steroid hormones.Created October 17, 2024 • Updated October 20, 2024 -
measure GC-MS organic acids
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Gas chromatography mass spectrometry (GC-MS) platform targeting organic acids.Created October 17, 2024 • Updated October 20, 2024 -
measure Liver enzymes
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3Liver enzymes, for instance Albumin, Jodide, Aspartaat Aminotransferase (ASAT), and Alanine Transaminase (ALAT), measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure DNA methylation (array)
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION - BB3Assessment of DNA methylation as obtained through DNA methylation arrays.Created October 17, 2024 • Updated October 20, 2024 -
measure Zygosity (DNA)
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQ14 YS_DHBQ16 YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12Zygosity typing based on micro-satellite markers, single nucleotide polymorphisms (SNP), or variable number (short) tandem repeats (VNTRs).Created October 17, 2024 • Updated October 20, 2024 -
measure Blood sugar markers
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Blood sugar markers, for instance Glucose, Insulin, and C-peptide, measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure Dipstick
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Urinary dipstick (Siemens, Marburg, Germany) was applied to the first thaw of the urine samples either by dipping in the residual urine volume after aliquoting or by dropping urine on the dipstick to screen for signs of infections in the urine and to measure leukocytes, nitrite, proteins, glucose, and blood presence in the urine.Created October 17, 2024 • Updated October 20, 2024 -
measure Inflammation markers
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Inflammation markers, for instance C-reactive protein (CRP), Lymphocytes, Neopterin, Immunoglobulin E (IgE), Immunoglobulin G (IgG), and tissue Transglutaminase Immunoglobulin A (tTg-IgA), measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure Oxidative stress markers
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Oxidative stress markers, including Oxidized DNA/RNA, Total Antioxidant Capacity, and Thiobarbituric acid reactive substances (malondialdehyde), were measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure Viral infections
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3Viral and parasitic infection loads, for instance Influenza A, Influenza B, Herpes Simplex Virus 1 (HSV1), Herpes Simplex Virus 2 (HSV2), Toxoplasma Gondii, Cytomegalovirus (CMV), Epstein-Barr Virus (EBV), and Procalcitonin, measured with traditional enzymatic tests, such as Enzyme-Linked Immunosorbent Assays (ELISA).Created October 17, 2024 • Updated October 20, 2024 -
measure Urine sample
Study: Netherlands Twin Register Mode of collection: MeasurementsAndTests Biological sample/measurement Available measurements: Young Netherlands Twin Register YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YE_COG18First-morning, spot, or 24 hour urine sample.Created October 17, 2024 • Updated October 20, 2024 -
measure Anthropometry
Study: Netherlands Twin Register Mode of collection: SelfAdministeredQuestionnaire Available measurements: Young Netherlands Twin Register YS_1 YS_2 YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1 YS_TRIP age 2 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12Anthropometric measurements include height, weight, body mass index (BMI), and body circumferences.Created October 17, 2024 • Updated October 20, 2024 -
measure Pubertal Development
Study: Netherlands Twin Register Mode of collection: SelfAdministeredQuestionnaire Available measurements: Young Netherlands Twin Register YS_1 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YC_ADHMRI YE_COG18 YS_TRIP age 1-2Pubertal Development was assessed through questions about breast growth, menstruation, shaving, deepening of the voice, and growth spurts.Created October 17, 2024 • Updated October 20, 2024 -
measure Skinfold thickness, waist and hip circumference
Study: Generation R Mode of collection: MeasurementsAndTests Anthropometrics/Body measures Available measurements: Generation R 6 weeks 6 months 1 year 2 years 3 years 4 yearsSkinfold thickness, waist and hip circumference were assessed as an indication of body fat. Skinfold thickness can noninvasively and reliably be measured at various sites of the body using a skinfold caliper. Based on measurements at multiple sites of the body, the total body fat and contribution of fat to the body mass can be estimated.Created October 17, 2024 • Updated October 20, 2024