Difference between Plasma Metanephrine Levels Collected by Direct Venipuncture and Indwelling Intravenous Cannula in Hypertensive Patients

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20221201001

Enrollment

Registered

2022-12-01

Start date

2022-06-28

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Plasma metanephrine levels collected by direct venipuncture and indwelling intravenous cannula in hypertensive patients Plasma metanephrines, venipuncture, indwelling cannula, hypertension

Interventions

Plasma metanephrines level collected by direct venipuncture immediately after collection by indwelling intravenous cannula,Plasma metanephrines level collected by indwelling intravenous cannula after

Diagnostic,Diagnostic

Plasma metanephrines level collected by direct venipuncture,Plasma metanephrines level collected by indwelling intravenous cannula

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Adults aged 18 years or older with hypertension

Exclusion criteria

Exclusion criteria: 1. Presence of underlying disease affecting the sympathetic nervous system or the plasma metanephrines level, 2. Treatment with any medication that interferes with the plasma metanephrines level, 3. Inability to comply with the protocol, 4. Pregnancy

Design outcomes

Primary

Measure	Time frame
Plasma metanephrines at the day of blood sampling Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)	—

Secondary

Measure	Time frame
Pain score at the day of blood sampling Visual analog scale	—

Countries

Thailand

Contacts

Public ContactWannida Pisutsawat

Faculty of Medicine, Chulalongkorn University

6470058930@student.chula.ac.th022564101

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026