Clinical Research Directory

Inclusion Criteria: * The subject must be 18 years or older. * Informed consent obtained from subject able to understand information given and willing and able to voluntary give their consent to participate. Where the subject cannot provide informed consent, informed consent is obtained from the legally authorized/designated representative, once they have been fully informed. * For arterial and venous blood draw, the subject must have existing arterial and/or venous lines or undergo venipuncture as part of standard of care (criteria not appliable to apparently healthy individuals donating blood via venipuncture). Exclusion Criteria: * Subjects who have previously provided successful measurements of arterial or venous samples for this study. * Subjects for whom the investigator (or designee) evaluates that sample collection would pose an unnecessary or unacceptable safety risk.