Jinfiniti Review: What an NAD+ Test Can Actually Tell You

Jinfiniti Precision Medicine is not really a supplement company that happens to sell a test. It is a testing company — it runs a CLIA-certified lab in Augusta, Georgia that measures NAD+ inside your cells — and it also sells the supplements you would take after seeing the result. That structure is what makes it worth reviewing carefully, because it is genuinely different from every other brand on this site, and because the difference cuts both ways.

The pitch is seductive and, on its face, exactly what this site keeps asking for: stop guessing, measure. The problem is what happens after the number comes back. The public shop, powder, membership, quality and legal pages were reread October 15, 2026. The literature search below remains identified as an August observation.⁹¹⁰

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What Jinfiniti actually sells

Two things, sold as a loop.

The test. The Intracellular NAD® Test is a $198 at-home finger-prick kit using dried blood spots. It measures NAD+ inside cells rather than in plasma, is processed in Jinfiniti's own CLIA-certified lab, reports a result in micromolar (μM) with a dosing recommendation attached, and takes about a week. The site states an analytical precision of 3.1% CV and says roughly 100,000 tests have been run.

The supplements. The October 2026 NAD+ shop lists the Vitality ↑® NAD+ Booster in powder and lozenge form at $118 a jar one-time ($106.20/month on a monthly subscription, $283.20 for three jars quarterly, $545.16 for six jars twice-yearly), Pure NMN Powder at $58, and the NR² Vitality ↑ NAD+ Booster at $108 marked down to $78. Bundles run from a $257 mini starter to a $708 maintenance package, and the NAD+ Optimization® Membership is $198 for the first month (a test plus a jar) then $88 a month, with a second test in month three and a third test in month six if needed. The separate quarterly membership is advertised at $264 per quarter after a $198 start; do not confuse its billing with the powder-only subscription.⁹¹⁰

Then there is the number that ties the loop together. Jinfiniti's shop page states that "optimal is a defined range, 40 to 100 micromolar," and that in the company's own trial 85% of participants reached optimal NAD levels within four weeks. The powder page claims an average 116% increase in NAD+ in four weeks; the lozenge page claims 150%, and describes itself as "twice better than best product on the market."

The uncomfortable finding: a precision company with a proprietary blend

Jinfiniti's entire identity is precision. "Precision Medicine" is in the company name. The quality page promises "pharmaceutical-grade ingredients at precise dosages." The whole argument for buying a $198 test is that guessing at a dose is unscientific.

So we opened the current Supplement Facts panel on the Vitality ↑ NAD+ Booster Powder. Here is what it says, in full:

• •Serving size 1 g (about one scoop), 62 servings per container.
• •NMN Powder (β-nicotinamide mononucleotide): 500 mg.
• •"Proprietary Vitality Lift Blend": 500 mg — creatine monohydrate, D-ribose, niacinamide.
• •Daily Value not established.

Three of the product's four ingredients are inside a proprietary blend with no individual amounts disclosed. You are told that half of every scoop is creatine, D-ribose and niacinamide, in some ratio the company does not publish. That is the exact practice the precision pitch exists to condemn — and it matters practically, because niacinamide is itself an NAD+ precursor with its own dose-dependent methylation load (the reason people pair high precursor doses with TMG, which we cover in the NMN and TMG stack), and creatine at a meaningful dose is a different product than creatine at a token one. You cannot compare this formula against a plain NMN capsule, or against another brand, without those numbers.

A company that will sell you a lab test to avoid guesswork should not ask you to guess what is in its own scoop.

What an NAD+ test can and cannot tell you

This is the heart of the review, so let us be precise about it.

What the test can do. It can tell you a real, physically measured quantity: how much NAD+ is inside your cells at one moment, from a finger-prick sample, using the company's assay. Jinfiniti describes its laboratory as high-complexity and CLIA certified; that is a statement about laboratory standards, not proof that its target range predicts a health outcome.¹¹ That is not nothing. NAD+ declines with age and sits at the center of cellular energy metabolism and DNA repair signaling ¹, and there is genuine value in a before-and-after number when you are spending real money on a precursor. It can also, in principle, tell you whether a given product is doing anything measurable in you — which is more than most supplement buyers ever learn. We put the same argument to readers in NAD+ before and after.

What the test cannot do. It cannot tell you that you will feel better at a higher number, because no published human trial has shown that titrating a person to a target intracellular NAD+ level improves any clinical outcome. That is the missing link, and it is load-bearing. The 2025 clinical overview of NAD+ interventions in Nature Aging — a clinical overview of the field — concludes with an explicit call for large-scale studies to determine optimal dose, administration route and frequency, along with long-term safety and interindividual variability ². In other words, the thing the "optimal range" presupposes is the thing the field says is still unresolved.

So the sentence on Jinfiniti's test page — "Benefits are ONLY realized when NAD+ level is optimized" — is not a research finding. It is the premise that makes the loop work. And the loop is closed: the company that sells the test also defines what counts as optimal, also sells the product that moves you into the range, and also guarantees that you will get there.

That is not fraud, and it does not mean the number is fake. It means the reference range and the outcome claim come from the same party that benefits from both, and there is no independent trial you can check them against.

The efficacy numbers, and where they live

Jinfiniti's quality page says: "We don't just make claims. We measure results with precision testing and publish the data." So we went looking for the data.

In August 2026 we searched PubMed, the main database of published medical research. A search for "Jinfiniti" returns nine records — all of them Dr. Jin-Xiong She's earlier work in type 1 diabetes, oncology and biomarker discovery, none about NAD+ supplementation. A search for "Accuri Vitality Boost", the product's former name, returns zero. A search for "Vitality NAD booster" returns three unrelated papers.

The conclusion is narrow and should be stated exactly: the 85%, 116% and 150% figures are company-reported and were not identified as peer-reviewed findings in our August literature search. They may be perfectly real internal results. The historical search did not identify a peer-reviewed report behind those specific figures. The October sales pages continue to publish efficacy percentages, but a company percentage or a “backed by clinical trials” badge should not be weighted like an independently inspectable trial of the finished formula.

There is a second wrinkle worth naming. The Vitality NAD+ Booster page carries a section headed "The research behind NAD+ Booster... validated through rigorous clinical research," listing six DOIs under "Peer Reviewed" badges. The two NAD-related ones resolve to a dose-ranging trial of plain NMN in healthy middle-aged adults ³ and the trial of plain NMN in prediabetic women ⁴. Both are ingredient studies rather than tests of Jinfiniti's finished formula. The page also lists a separate NAD-precursor cardiovascular study and creatine research; describing every remaining citation as a creatine study would be inaccurate. That is borrowed single-ingredient research presented under a heading that says "the research behind" this product — the same structural problem we flagged in our Qualia NAD+ review, where a multi-ingredient stack inherits the credibility of each component without the finished formula ever being tested.

The evidence that does apply

Strip away the branding and Jinfiniti's formula is NMN plus niacinamide plus two energy-metabolism ingredients. The NMN part has a real evidence base, and it is the same one that applies to every NMN product: oral NMN reliably raises blood NAD+ and is well tolerated at studied doses ³⁵, and its NR sibling does the same ⁶. That is the proven half.

The unproven half is the half everyone actually wants. A 2025 systematic review and meta-analysis of NMN and NR found no reliable improvement in skeletal muscle mass or function when trials were pooled ⁷. The softer human signals — maintained walking speed, better self-reported sleep in older adults ⁸ — are small and subjective. So even a buyer who tests, supplements, retests and lands squarely in the 40–100 μM band has demonstrated one thing: that the number moved. Whether the person feels or ages differently is a separate question the biomarker does not answer. We work through that gap in does NMN actually work? and the NAD+ therapy evidence pillar.

What the loop costs

Run the brand's own numbers. The current panel lists 62 servings. Jinfiniti's stated guidance for someone who has not tested is one scoop in the morning and one in the evening — two servings a day, so 62 servings last about 31 days. The bottle costs $118 once, or $106.20 on the monthly powder subscription. The quarterly powder plan bills $283.20 at once for three jars: $94.40 per jar by arithmetic, although the page labels it $94.33. The six-jar plan bills $545.16, or $90.86 per jar. Compare the total charge rather than just the per-jar label.⁹ The label permits up to four servings a day, which reduces 62 servings to about 15.5 days; a 30-day supply at that use would cost roughly $228 at the one-time bottle price.

Add testing. Twelve jars of powder plus two tests at list total $1,812, before any shipping or tax; the powder lasts about 372 days at two scoops daily. The membership is the cheaper path to the same place: $198 for month one, then $88 a month, which comes to about $1,166 for the year with two tests included; conditional third test in month six. Either way this is an expensive way to take NMN — Jinfiniti's own Pure NMN Powder at $58 is on the same shelf, and a plain NMN capsule from another brand costs a fraction of the blend. For the price ladder across the category, see best NMN supplements and the NAD+ price index.

What to confirm before subscribing

The membership page says no contracts and cancel anytime, and includes onboarding, dosage guidance, a 30-day powder supply, the baseline test and a month-three retest. Its conditional month-six retest is additional to those two tests. Do not interpret an optimization guarantee as a demonstrated health benefit or assume that it is a cash-refund promise.¹⁰

The public Terms of Service page reviewed did not specify a product refund window or a subscription cancellation cutoff. Before enrolling, confirm how to cancel before the next charge, whether unused test kits can be returned, whether supplements must remain sealed, who pays return postage, and what happens if the starting dose uses a jar faster than the included 30-day supply. We did not place an order or submit a blood sample.¹²

Where Jinfiniti genuinely does better

To be even-handed, several things here are above the category average and should be said plainly:

• •It measures something. A CLIA-certified, high-complexity lab dedicated to NAD+ measurement is a real asset, and dried-blood-spot intracellular measurement is a harder, more meaningful thing to run than a plasma proxy.
• •It publishes a Supplement Facts panel with the NMN dose named — 500 mg — which many blends do not do, even if the other half of the scoop is hidden.
• •Its disclaimer is unusually direct. Every page footer states that NAD+ test results should not be used for medical decisions without a healthcare provider. That is the right sentence, and it is not buried.
• •It tells you to retest. The instruction to test four weeks after starting, then adjust, is methodologically better behavior than any brand that simply sells you a bottle and wishes you luck.

And the alternative Jinfiniti positions itself against — infusions and injections — really is worse-evidenced, not better: see NAD+ IV therapy evidence and NAD+ injections evidence.

Is Jinfiniti worth it?

• •What you are reliably buying: a real, lab-run measurement of intracellular NAD+ before and after supplementation, plus an NMN-based formula whose NMN dose is disclosed and whose NMN component has genuine human trials behind it.
• •What you are not buying: evidence that hitting 40–100 μM makes you healthier, published data behind the 85%/116%/150% figures, or knowledge of what three of the four ingredients in your scoop actually weigh.
• •The structural caveat: the seller of the test defines the target the test is scored against and sells the product that hits it. Nothing independent closes that circle.

The fair verdict: if you find it genuinely useful to watch a number move and you can afford roughly $1,200 to $1,800 a year, Jinfiniti is a coherent, competently run version of that idea — and it will actually measure you. But you are buying confirmation that a biomarker changed, not evidence that changing it changed you, and a company selling precision should not be hiding three of four doses in a proprietary blend. If the appeal is simply "is my NMN working," the cheaper honest answer is that oral NMN essentially always raises blood NAD+ ³⁵; the test mostly tells you something the trials already predict.

Bottom line

Jinfiniti is the rare NAD+ company that measures rather than asserts, and its CLIA-certified intracellular NAD+ test is a real instrument, not a gimmick. But the loop it sits inside is closed: Jinfiniti defines the optimal range, sells the product that reaches it, and guarantees the result — while the claim underneath it all, that benefits arrive only once NAD+ is "optimized," has no human outcome trial behind it, and the field's own 2025 review says optimal dosing is still unsettled ². The efficacy numbers are company-reported; our August literature search did not locate their peer-reviewed reports. And the formula that is supposed to embody precision puts creatine, D-ribose and niacinamide into an undisclosed 500 mg proprietary blend. Measure if it helps you stay consistent. Do not mistake a number in range for a proven benefit.

For the wider picture, read NAD+ therapy: what the evidence shows, NMN vs NR and the NAD+ dosage guide; for brands read on the same terms, see our Tru Niagen review, Qualia NAD+ review and Renue By Science review; and for the full ranked shelf, best NAD+ supplements and the NAD+ rankings hub.

This is consumer education, not medical advice. These are dietary supplements and a wellness test, not FDA-approved drugs or a diagnostic. If you are pregnant, nursing, taking medication or managing a medical condition, talk to a clinician before acting on any NAD+ result.