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Isotope Labeled Neurotransmitters 4 Hydroxy 3 Methoxyphenyl D3 Acetic D2 Acid (Hva D5), supplied by CDN Isotopes, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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vma, hva, 5-hiaa in urine  (Chromsystems Instruments)
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Vma, Hva, 5 Hiaa In Urine, supplied by Chromsystems Instruments, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Hva 2tm M Phenylene Bis Maleimide, supplied by DuPont de Nemours, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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https://www.bioz.com/result/hiclave hva-110/product/Hirayama Manufacturing Corporation
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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hva  (Thomasian Endocrine Progress)
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Thomasian Endocrine Progress hva
From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Hva, supplied by Thomasian Endocrine Progress, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Physik Instrumente p-270 hva amplifier
From UK NEQUAS report for Urinary Catecholamines & <t>Metabolites.</t> Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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From UK NEQUAS report for Urinary Catecholamines & Metabolites. Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)

Journal: Journal of Mass Spectrometry and Advances in the Clinical Lab

Article Title: Validation of an LC-MS/MS method for urinary homovanillic and vanillylmandelic ACIDS and application to the diagnosis of neuroblastoma

doi: 10.1016/j.jmsacl.2025.04.007

Figure Lengend Snippet: From UK NEQUAS report for Urinary Catecholamines & Metabolites. Analytical Performance for specimens from distribution 271(EQA). The green traffic light reflects that the laboratory is performing as well as the state-of-the-art allows. The urine volume has been assumed to be 1.0L, collected over a 24 h period, to avoid there being confusion between those laboratories that report in units/L and those that report in units/24 h. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)

Article Snippet: part of standard clinical procedures of analyses, VMA and HVA were measured in our laboratory by HPLC–ECD using an IVD-CE certified kit specifically intended for the analysis of these urinary metabolites (VMA, HVA, 5-HIAA in Urine − Chromsystems Instruments & Chemicals GmbH, Gräfelfing, Germany).

Techniques: