Lab testing before IV therapy: what your numbers can tell you

Most IV visits begin with a question: how are you feeling? That matters. A lab panel adds a second question: what do your numbers show? Together they give your provider more to work from than either one alone.

Why start with a measurement

Nutrient needs vary from person to person, and so does what your body already has. Diet, age, medications, training and how well you absorb nutrients all play a part. A panel gives your provider a baseline before choosing what goes into a drip, and a way to compare later.

Labs are optional. Every drip can be booked without them, and every first visit is reviewed by a licensed nurse practitioner either way.

Which nutrients commonly run low

Across the United States, most people meet most of their needs, but a meaningful share do not.

• Vitamin B6, iron and vitamin D. The CDC's Second Nutrition Report found that fewer than 10% of people had deficiencies for most indicators it measured, with the highest rates for vitamin B6 (10.5%), iron (9.5%) and vitamin D (8.1%).
• Vitamin D, more broadly. The NIH Office of Dietary Supplements reports that in national data from 2011 to 2014, 5% of people were at risk of vitamin D deficiency and another 18% at risk of inadequacy.
• Magnesium. According to the NIH, 48% of Americans take in less magnesium from food and drinks than their estimated average requirement.
• Vitamin B12. The NIH lists older adults, people who take metformin or acid-reducing medicines, and people who eat little or no animal food among those at higher risk of low B12.

These are population figures. Your own numbers are the point of testing.

What RESRV's panel looks at

Your nurse practitioner can order The Reserve System, a lab panel run by Cell Science Systems. It has two parts.

Cellular micronutrient assay. Cell Science Systems describes it as testing for insufficiencies in vitamins, minerals, amino acids and other nutrients within immune cells. According to Rupa Health, it covers more than 40 markers, including vitamins A, the B vitamins, C, D, E and K, minerals such as zinc, magnesium, selenium and iron, and amino acids, using a whole blood sample.

Methylation profile. Methylation is one of the chemical processes your body relies on every day, and several B vitamins take part in it. The profile gives your provider a view of how yours is working.

The panel costs $549. Results usually take about two weeks.

One needle stick

When your provider orders both labs and a drip, the blood for the panel is usually drawn at the start of your visit through the same needle stick used for your IV. One visit, one stick, and the drip carries on from there.

From results to your drip

Your provider reviews the results with you and uses them to decide what goes in your drip and what stays out. Most RESRV add-ins are single nutrients, such as B12, vitamin C, magnesium or zinc, so a drip can be built around what your panel shows. The custom drip starts at $150, and your provider can add from there.

An IV delivers nutrients straight into the bloodstream; how your body takes in nutrients from an IV explains why that route matters.

Measure, match, adjust

A single test is a snapshot. Over months, repeat testing shows what is changing and whether a change is working, and your provider adjusts the plan with you. That is how RESRV is built to work with clients over time, and why membership pairs well with testing.

Lab results are one input among several. Your provider also weighs your history, your medications and how you feel, and some findings are better followed up with your own doctor.