ALPCO 25(OH) Vitamin D CLIA Kit - Fresh Versus Frozen Serum and Plasma Stability Study

Enrolling by invitation

Conditions studied: Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers

In brief

This study evaluates the stability of 25-hydroxyvitamin D \[25(OH)D\] measurements in human serum and plasma using the ALPCO 25(OH) Vitamin D CLIA Kit. The study compares results obtained from fresh specimens with those obtained after storage under various temperature and time conditions, including long-term frozen storage and short-term handling scenarios. The objective is to demonstrate that specimen storage conditions do not result in clinically meaningful differences in measured 25(OH)D concentrations, supporting the use of fresh and previously stored samples in laboratory testing.

Key facts

Study ID

NCT07565064

Run by

American Laboratory Products Company

People needed

80

Starts

2026-04-18

Expected to finish

2026-12-01

Last updated by the study team

2026-05-04

Who can join

Age: 22 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Male or female adults 22 years of age or older
• Able and willing to provide a blood sample in accordance with the protocol
• Able to understand the study requirements and provide written informed consent

You may not qualify if…

• Unable or unwilling to provide a blood sample
• Current participation in another investigational study that may interfere with study results
• Any condition that, in the opinion of the investigator, would preclude safe participation or compromise the integrity of the study

Where it is running

• ALPCO — Salem, New Hampshire, United States

Full record on ClinicalTrials.gov

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