RealTime Laboratories Review: Mycotoxin Urine Test

What is RealTime Laboratories

RealTime Laboratories is a clinical lab based in Texas that specializes in mycotoxin testing. Mycotoxins are toxic compounds that some molds produce. RealTime built its reputation on a urine test that screens for these compounds, and the company describes itself as a pioneer in the space. The lab is CLIA certified and CAP accredited, which are the two credentials that matter most for a clinical lab in the United States. CLIA is the federal certification that lets a lab run and report clinical tests. CAP accreditation, from the College of American Pathologists, is a rigorous voluntary inspection program on top of CLIA.

For years the RealTime panel was mostly ordered through doctors, functional medicine practitioners, and environmental inspectors. That changed in January 2026, when RealTime made its at-home mycotoxin panel available direct to consumers. You can now buy the kit yourself online without a physician order, collect a urine sample at home, and mail it back. A doctor is still involved if you want to run it through insurance or Medicare.

The important thing to understand up front is what category this product sits in. This is a body-burden test. It is designed to measure whether certain mycotoxins show up in your urine. It is not an environmental test, so it does not sample your home, and it is not a diagnosis. We come back to that distinction throughout this review because it is the single most common point of confusion for buyers.

How the test works

The mechanics are simple and the whole point is that you never leave your house to give the sample.

• Order the kit. You buy the panel online or through a provider. RealTime ships a collection kit with instructions and a prepaid return label for the continental United States.
• Collect a urine sample at home. You follow the included directions to collect and package the sample. RealTime states the assay is validated on a random urine sample and does not require any provocation step, though some practitioners have their own prep protocols (more on that below).
• Ship it back. You drop the sealed sample in the mail with the prepaid label.
• The lab runs a competitive ELISA. ELISA stands for enzyme-linked immunosorbent assay. It uses antibodies made to bind specific mycotoxins. RealTime reports this method as analytically validated for accuracy, precision, sensitivity, specificity, and reportable range under CLIA and CAP standards.
• You get a report. Results come back in roughly 7 to 10 business days. Each of the 16 mycotoxins is reported with a measured value in parts per billion (also written as nanograms per milliliter), so you see a number for each toxin rather than a simple pass or fail.

That parts-per-billion detail matters. The lab is measuring at extremely low concentrations, which is why RealTime argues you do not need to load your body with binders or sweat it out before the test. The flip side, which we cover in the limitations section, is that measuring low concentrations is exactly why diet and background exposure can push a healthy person into a positive result.

What it tests for and what you get

The headline number is 16 mycotoxins, and the panel is unusually broad because it includes nine macrocyclic trichothecenes, the group linked to Stachybotrys, the mold many people call black mold. Here is the full list RealTime reports on its Mycotoxin Panel.

What you physically receive is the collection kit, the prepaid mailer, and, after processing, a lab report listing each toxin and its measured level. RealTime also sells other panels beyond this core urine test, including a broader multi-toxin profile and an environmental assessment that samples household dust rather than your body. Those are separate products at separate prices. If you want the environmental angle, read our guide to mycotoxin testing and the ERMI test before you choose.

Pricing and what is included

RealTime lists the core Mycotoxin Panel at about $399. Some practitioner portals offer it for closer to $299, so the exact number depends on where you buy. The company also sells larger panels at higher prices, including an all-toxin profile and environmental options that run into the several hundreds. Because lab pricing shifts, confirm the current figure on the official site rather than trusting any third-party number, including this page.

A few money details worth knowing:

• HSA and FSA eligible. You can generally pay with pre-tax health spending accounts.
• Possible insurance or Medicare coverage. RealTime says the test may be covered when a licensed physician orders it, but coverage varies by plan, so do not assume it.
• Direct-to-consumer pricing is flat. When you buy the at-home kit yourself, the price is what you pay. There is no separate draw fee because you collect the sample.
• Prepaid return shipping is included within the continental United States.

Put the cost in context. A single professional mold inspection of a home often runs several hundred dollars and sometimes more, and it tells you about the building. A urine panel at a similar price tells you about your body. They are not substitutes, which is why some people end up paying for both. Decide what question you actually need answered before you spend.

Accuracy, science, and credentials

This is the section that separates a fair review from a sales pitch, because there are two very different things being measured when people say a test is accurate.

The lab work is legitimate

RealTime is CLIA certified and CAP accredited, and it states the mycotoxin assay is analytically validated for accuracy, precision, sensitivity, specificity, and reportable range. In plain terms, that means the lab can reliably detect the target compounds at the levels it claims, and its process meets federal standards. That part is real, and it is more than many wellness tests can say.

The clinical meaning is contested

Here is the part the marketing tends to skip. The CDC and FDA do not recognize urine mycotoxin testing as a validated way to diagnose mold related illness, and the tests have not been cleared by the FDA for that diagnostic use. There are no agreed reference ranges that tell you which urine level is normal and which one signals a problem. Published urinary biomonitoring studies consistently find that most healthy people, on the order of 60 to 100 percent depending on the study and the toxin, already test positive for urinary mycotoxins from diet alone. Grains, coffee, nuts, dried fruit, and other everyday foods routinely carry trace mycotoxins, and the body clears them into urine whether or not you have a mold problem at home.

Because of that, a positive result on its own does not prove where the exposure came from or that it is causing any health issue. Federal agencies have specifically cautioned that unvalidated urine mycotoxin testing can lead to misinterpretation, unnecessary worry, and incorrect conclusions. None of this means RealTime runs a bad lab. It means the test measures a real thing whose meaning is genuinely unsettled, and the honest way to use it is as one input for a knowledgeable clinician, not a verdict.

The provocation debate

You will see practitioners recommend a prep protocol before collection, often a binder like liposomal glutathione for several days plus sweating in a sauna or hot bath shortly before the sample. The idea is to mobilize stored compounds so more shows up in urine. RealTime itself takes the opposite position, stating its assay is sensitive enough to detect trace levels without any provocation and that it is validated on a random sample. Provocation is a clinical judgment call with its own risks, so if a provider suggests it, ask why and whether it applies to you.

Pros

• Real lab credentials. CLIA certified and CAP accredited, with an assay the company reports as analytically validated. This is a clinical lab, not a mail-order gimmick.
• Comprehensive panel. Sixteen mycotoxins, including nine trichothecenes tied to Stachybotrys, is broader than many competing urine panels.
• Non-invasive and convenient. A urine sample collected at home means no blood draw and no clinic visit.
• Fast turnaround. Results come back in about 7 to 10 business days once the sample reaches the lab.
• Now direct to consumer. Since January 2026 you can buy it without a doctor order, which removes a real barrier for people who want to look at their own numbers.
• Flexible payment. HSA and FSA eligible, with possible insurance or Medicare coverage when a physician orders it.
• Clear reporting. Each toxin comes back with a numeric value in parts per billion rather than a vague pass or fail.

Cons and limitations

• It measures your body, not your building. This is the big one. A urine panel cannot tell you whether mold is growing in your home or where. It is the wrong tool if your goal is to find a source.
• Not recognized for diagnosis. The CDC and FDA do not endorse urine mycotoxin testing as a validated diagnostic, and it is not FDA cleared for that use.
• No standard reference ranges. Without agreed normal levels, interpreting a number is hard, and most people need a knowledgeable provider to make sense of it.
• Diet drives positives. A large share of healthy people test positive from food alone, so a positive does not prove a building problem.
• Hard to interpret without expertise. With no standard reference ranges, a parts-per-billion number is difficult for a layperson to act on, and two labs can produce different-looking results for the same person.
• The method is debated. RealTime uses competitive ELISA, while some competitors use mass spectrometry (LC-MS/MS) that critics consider more specific for these trace levels. No independent standard settles which is better.
• Cost adds up. At roughly $399, and often paired with practitioner visits or a separate environmental test, the total spend can climb quickly.
• No treatment guidance from us. A test result is data. What to do about it, if anything, is a medical conversation for a licensed clinician, not a website.

Who it is best for (and who should skip it)

Best for

People working with a functional medicine or environmental health provider who already uses urine mycotoxin data as one piece of a larger picture. If you have a clinician who knows how to read these numbers alongside your history and your home situation, the panel gives them a data point. It also suits people who have already confirmed and addressed a mold source in their building and now want a body-burden baseline to track over time with professional guidance.

Who should skip it

Anyone whose actual question is is there mold in my house. A urine test will not answer that, and buying one first is a common and expensive detour. If you are trying to locate a source, prove a leak caused growth, or decide whether to remediate, your money goes further on testing the building first. People who want a self-interpreted, at-home yes-or-no answer should also be cautious, because the results genuinely need context that a report alone does not provide.

How it compares to alternatives

Versus other urine mycotoxin labs

RealTime uses competitive ELISA. Several competing labs, such as Mosaic Diagnostics (formerly Great Plains) and Vibrant, run urine mycotoxin panels using mass spectrometry (LC-MS/MS) and may cover a different or larger list of compounds. There is ongoing debate in the field about which method is more appropriate for these low concentrations. No independent standard crowns a winner, and all of them share the same underlying limitation on clinical interpretation. RealTime stands out mainly for its trichothecene coverage and its long track record.

Versus DIY mold test kits

A hardware-store mold plate or a DIY mold testing kit samples air or a surface in your home to see what grows. That tells you something about the building, not your body, and cheap settling-plate kits are notoriously unreliable. RealTime and a DIY kit are not competitors. They answer opposite questions, and the DIY kit answers the more useful one for most homeowners, however imperfectly.

Versus environmental dust testing (ERMI)

An ERMI test analyzes household dust for mold DNA to estimate the mold burden inside a home. RealTime actually sells its own environmental assessment product in this category, separate from the urine panel. If you want to understand the building, an environmental dust test is the right family of tool, not a urine panel.

Versus a professional inspection

A qualified inspector who follows the IICRC S520 standard (or holds ACAC or RIA credentials or a state license) physically examines the home, checks moisture, and can sample air and surfaces. That is the gold standard for finding and scoping a real mold problem in a building. It costs more than a test kit and answers the where and how bad questions that no urine panel can. If you are making a high-stakes property or lease decision, this is the path.

The short version: RealTime competes with other body tests. It does not compete with anything that tells you about your house. For that, see our full guide on how to test for mold.

How to use it step by step

• Step 1: Decide what you actually want to know. If the question is about your home, test the home first. If the question is about your body and you have a provider to interpret it, continue.
• Step 2: Choose how to buy. Order the at-home kit direct from RealTime, or have a physician order it if you want to try for insurance or Medicare coverage.
• Step 3: Read the prep instructions. Follow the kit directions exactly. If a clinician has given you a prep or provocation protocol, clarify it with them before you start, since RealTime states none is required.
• Step 4: Collect the sample. Collect the urine sample at home per the instructions and seal it as directed.
• Step 5: Ship same day if you can. Use the prepaid label and mail it promptly so the sample stays stable in transit.
• Step 6: Review results with a professional. When your report arrives in about 7 to 10 business days, go over the parts-per-billion values with a qualified clinician who can weigh them against your history and your environment. Do not self-diagnose from the numbers.
• Step 7: If the concern is your home, act on the building. Whatever the report says, a mold problem is fixed at the source. Find the moisture, find the growth, address it, and keep humidity in check.

Our verdict and rating

Our rating: 3.5 / 5. RealTime Laboratories is the real thing on the parts that a lab controls. It is CLIA certified and CAP accredited, the 16 mycotoxin panel is genuinely comprehensive, the urine collection is easy, and the turnaround is quick. If you are working with a provider who uses this kind of data, it is a credible choice and one of the more thorough urine panels available.

We hold the score at 3.5 rather than higher for reasons that have little to do with the lab and everything to do with the category. Urine mycotoxin testing is not recognized by the CDC or FDA as a validated diagnosis, there are no standard reference ranges, diet alone makes most healthy people test positive, and the results often need expert interpretation to mean anything. Most importantly for our readers, the test looks at your body and cannot tell you whether or where mold is growing in your home.

Bottom line: if a clinician is guiding you and you understand what a urine panel can and cannot say, RealTime is a solid pick. If you are trying to figure out whether your house has a mold problem, this is the wrong first purchase. Find the mold in the building first.

Find the mold before you test

A urine panel measures compounds in your body. It cannot point at the corner of the ceiling, the caulk behind the shower, or the spot under the sink where the problem actually lives. That is the gap Mold Scanner AI fills. Before you spend on any body test, use the app to locate the exact hotspots in your home so you know what to sample and where to fix. It walks you through the same rooms and surfaces a professional inspector checks, and it gives you an AI verdict from a single photo in about 30 seconds. Start with the building, confirm the source, then decide whether any body-level testing is worth it with your clinician. See how Mold Scanner AI works.