6 apps keep your medication list and lab results in one place in 2026

Medications and lab results in one app: the short answer

Longetic, KeepMD, Guava Health, CareClinic, Apple Health and Epic MyChart are the six apps out of fourteen checked that hold both a medication list and lab values. Only Longetic and KeepMD publish that the two sit on one timeline. Every dedicated medication reminder app in the set publishes no lab import at all.

The category has quietly split in two. Medisafe, MyTherapy, Dosecast and Round Health are built around the dose and the reminder, and none of them publishes any way to get a lab report into the app. Healthmatters.io, Heads Up Health and Carrot Care are built around the biomarker chart, and none of them publishes a medication list. Six products sit in the middle, and two of those say out loud that the medications and the results are on the same timeline.

Where several clinics prescribe at once, what belongs on the list when several doctors prescribe becomes its own question. That split would be a filing inconvenience if medications had no effect on lab numbers. They do. Levothyroxine produces a measurable free T4 peak about four hours after the dose. A single 65 mg dose of ferrous sulfate lifts serum iron and returns it to baseline about eight hours later. Thiazide diuretics move potassium, sodium, urate and glucose. A result read without the medication list beside it is a result read without half the explanation.

We will walk you through which apps hold both, what each of ten common medications does to which test, when to draw the blood relative to the dose, and how long to wait after a medication change before a retest means anything.

Which apps hold both your medication list and your lab results?

Longetic, KeepMD, Guava Health, CareClinic, Apple Health and MyChart hold both. Longetic and KeepMD are the only two that publish a single timeline carrying medications, visits and results together. Guava and Apple Health keep both, on separate surfaces. Medisafe, MyTherapy, Dosecast, Round Health, Healthmatters.io, Heads Up Health, CommonHealth and Carrot Care each hold one side only.

Every row below comes from the vendor's own website or its App Store or Google Play listing, on 11 September 2026. Where a vendor publishes nothing on a point, the cell says "not published" rather than a guess, because in this category the gaps are the informative part. Two families of generically named "Pill Reminder" apps were left out, because several unrelated publishers ship apps under that name and a row would not identify a single product. As a disclosure, Longetic is our product, so weigh the first row of the table below accordingly. The facts Longetic publishes about itself are on the Longetic app page.

Platforms are the other axis the table leaves out, and they are worth knowing before you pick. Longetic, Carrot Care and Round Health are iOS only. CommonHealth is Android only. Healthmatters.io is web only. KeepMD, Guava Health, CareClinic, Medisafe, MyTherapy, Dosecast, Heads Up Health and MyChart all publish both mobile platforms, and Apple Health is part of iOS itself. If what you mainly need is the chart, there are apps built specifically to chart blood test results over time.

Three things fall out of that table.

The first is that price is not what separates the two halves. Medisafe and Guava sit within a few dollars of each other and do completely different jobs. The second is that no app in the set publishes both an automatic parse of a lab PDF and a dosing schedule with reminders: Longetic publishes the parse and not the dose reminder, KeepMD publishes the reminder and a page cap on OCR, Guava publishes both but not a combined view. The third is the one worth acting on: if you take anything daily and you also track markers, you are currently running two apps and doing the joining in your head.

If the question you actually have is narrower, which app reads a lab PDF best and charts each marker over time, that is a different comparison and we ran it separately in best apps to track blood test results over time.

Why does it matter whether the two lists sit together?

Because the medication list is the thing clinicians most often have wrong, and because it changes how a result reads. In one Canadian teaching hospital, across 151 admissions, 53.6 percent of patients had at least one unintended medication discrepancy, and 38.6 percent of those discrepancies had the potential to cause moderate to severe discomfort or clinical deterioration. A result interpreted without the current list is interpreted without half the context.

The Joint Commission still carries the requirement as National Patient Safety Goal NPSG.03.06.01 in its documents effective January 2026, and the wording is specific about who ends up holding the list. Organizations must "provide the patient or resident (or family as needed) with written information on the medications the patient or resident should be taking when they leave the organization's care (for example, name, dose, route, frequency, duration, purpose)", and staff must tell the patient "it is important to bring their up-to-date list of medicines every time they visit a doctor". The written list is handed to you. Keeping it current afterwards is your job, and nobody does it for you.

The scale of the problem is published. In AHRQ's medication reconciliation toolkit, "variances between medications patients were taking prior to admission and their admission orders ranged from 30 percent to 70 percent", and "36 percent of patients had errors in their admission medication orders with the majority of these occurring during the medication history gathering phase". The same toolkit puts the value of fixing it plainly: "an effective medication reconciliation process can detect and avert up to 85 percent of medication discrepancies". The World Health Organization made this its third Global Patient Safety Challenge in 2017, aiming "to reduce severe avoidable medication-related harm by 50%", and estimates the global cost of medication errors at "$42 billion USD annually". It is not only a hospital problem either, and the same mechanism explains why the medication list on your after-visit summary drifts after an ordinary appointment.

None of that is an argument for an app in particular. It is an argument for the list existing, being current, and being in the same place as the results it explains, so that the two are never separately remembered.

Which medications change the numbers on your lab report?

Longetic and every other app in this category files the numbers without judging them, so this is the part you have to know yourself. Levothyroxine, biotin, metformin, statins, proton pump inhibitors, corticosteroids, oestrogen, thiazide diuretics, NSAIDs with ACE inhibitors, and iron supplements all move specific tests in documented directions. Each row below is from a drug label or a guideline, not an estimate.

This table is about what a medication does to a measurement. It is not about whether to take the medication, and it is not a reason to stop or change anything. Dose decisions belong to the clinician who prescribed them.

Two of those rows deserve a note. Biotin is the one people take without thinking of it as a drug, because it arrives in hair and nail supplements rather than on a prescription: the FDA puts normal dietary intake at 30 micrograms a day and notes that over-the-counter high-dose products commonly contain 5,000 to 10,000 micrograms. And the reason an oestrogen row sits next to a levothyroxine row is that they interact through the same mechanism, which is why a thyroid result is read as free hormone rather than total hormone when binding proteins have shifted.

Assay interference from medicines is also an active topic for the laboratory profession rather than settled history. The 2026 European Thyroid Association guideline on interference in immunoassay measurements used in the assessment of thyroid function classifies interference as acquired, genetic or pharmaceutical in origin, and concludes that "liaison between the clinician and clinical biochemistry teams is essential". A patient who can show the clinician a current medication list is the cheapest version of that liaison.

For the non-medication reasons a number can be wrong before the laboratory even runs the sample, including training, fasting, the tourniquet and which analyser was used, see the relevant section of which biomarkers are worth tracking and how often to retest.

When should you take a blood test relative to your dose?

Longetic records the date of a report but not the hour of your dose, so this is worth writing down yourself. The published timings that matter: free T4 peaks about 4 hours after a levothyroxine dose, serum iron peaks about 4 hours after an iron tablet and is back to baseline by about 8 hours, and one assay manufacturer asks for at least 8 hours between a biotin dose above 5,000 micrograms and the sample.

The levothyroxine case is the one people get caught by most often, because the dosing instruction and the testing instruction pull in different directions. The FDA label says levothyroxine "is administered as a single daily dose, preferably one-half to one-hour before breakfast", and "should be taken at least 4 hours apart from drugs that are known to interfere with its absorption". The ATA guidelines then note the roughly 15 percent transient peak in free T4 about four hours later. A morning dose followed by a mid-morning blood draw is therefore a measurement taken close to the peak, and the same person tested before the dose on another day will produce a different free T4 without anything having changed clinically. The practical rule that falls out of it is consistency: same time relative to the dose, every time, and tell the clinician which it was.

Iron is the cleanest of the three, because the study measured the whole curve. After a single 65 mg dose of ferrous sulfate in healthy controls, serum iron and transferrin saturation rose at four hours and were back to baseline at eight to twelve hours. In people who were iron depleted the peak was more pronounced and took until 24 hours to return. Serum iron is the affected measure here. Ferritin is a different marker with different behaviour, and it is not the one this study tracked.

Biotin has no published regulatory washout period, but the assay manufacturer Roche publishes a working one: "patients taking biotin doses >5,000 mcg should wait at least 8 hours after the last biotin administration before a sample is taken". The FDA's own guidance to test makers asks them to evaluate interference up to 3,500 nanograms per millilitre, "three times the maximum expected clinical concentration", which tells you the agency treats very high supplement doses as a realistic scenario rather than an edge case.

One more, from MedlinePlus rather than from a drug label: for an iron test, "your provider may ask you to fast (not eat or drink) for 12 hours before your test. The test is usually done in the morning." When two instructions apply at once, the one from the clinician who ordered the test wins.

How long after a medication change should you retest?

Longetic records the date a medication changed and the date of every result after it, which is the input this question needs. The intervals differ by marker and by country: levothyroxine reaches steady state in about 6 weeks by the ATA, while NICE says every 3 months until stable. Lipids get a repeat 4 to 12 weeks after a statin change.

The ACE inhibitor row carries the only threshold in this article that a reader can apply directly, and it is worth quoting because it prevents an avoidable panic. NICE NG203 says not to modify the dose if "the GFR decrease from pretreatment baseline is less than 25%" or "the serum creatinine increase from baseline is less than 30%", and to investigate other causes if the change reaches those levels. A creatinine that rises a little after starting one of these drugs is, within those bounds, the drug working as expected rather than a kidney problem. The same guideline says to stop the drug if potassium reaches 6.0 mmol per litre or more, which is a clinician's decision and not a self-management one.

Note what the levothyroxine rows do, because the pattern repeats across the whole table. Three respected bodies give three different intervals for the same drug, and none of them is wrong: the ATA is describing pharmacokinetics, the FDA label is writing a safety margin, and NICE is designing a primary care schedule. If your app holds the date you changed the dose and the date of every result since, you can see which interval your own care is actually running on. If it does not, you are reconstructing that from memory in the room.

For how far a number has to move before the change is real rather than noise, which is the other half of this question, see which biomarkers are worth tracking and how often to retest.

Which app should you use if you need dose reminders and a lab history?

Longetic holds the record half of this problem and publishes no dose schedule and no dose reminder, so on its own it is the wrong single answer for anyone who needs to be told when to take a pill. The honest answer is a pair, one app for the dose and one for the record. Four of the reminder apps checked publish no way to get a lab report in at all.

The two halves are built by different companies for different reasons, and the published feature lists barely overlap. Medisafe publishes a drug-to-drug interaction checker, available only in the United States and only when the app language is English, and a progress report it describes as a PDF to send a clinician. MyTherapy publishes dose reminders, refill reminders based on the stock it counts, and a printable health report, and it publishes no interaction checking at all. Neither publishes any way to take in a laboratory report as a PDF, a photo or a scan. MyTherapy does publish that you can record lipid values yourself, including total cholesterol, LDL and HDL, which is a different thing from reading them off a report, and the difference starts to matter the moment you have twelve markers instead of three.

Every cell comes from the vendor's own site or from its App Store or Google Play listing, read on 22 September 2026, and where a vendor publishes nothing the cell says so rather than guessing. The real cost of running two apps is not the second subscription. It is that the dose history lives in one of them and the result lives in the other, so the question this article opened with, whether the medicine moved the number, is the one question neither app can answer on its own. If you want the record half done properly, the same logic applies to apps that read a lab report and chart each marker, and to what belongs in a summary you hand a clinician.

What changed in 2026 for people who track both?

The consumer side moved, the guidance side barely did. On 9 September 2026 Apple announced in-app ordering of a Quest blood panel from within the Health app, at $119 for a panel Apple describes as over 50 key biomarkers. Labcorp launched a consumer app in May 2026. The European Thyroid Association published a guideline on assay interference in August 2026 that names medications as one of three causes.

Apple's announcement is the largest of the three, because it puts a lab order and a lab result inside the same app that already holds a medication list. Apple describes the panel as covering "over 50 key biomarkers", and Quest confirms the same programme: $119, US only, availability varying by state, drawn at Quest locations, with a free consultation with third-party providers to discuss the results. Apple says the feature ships later in the year, in US English first. What neither company publishes is whether the Medications feature and the returned lab results are surfaced together, which is the exact question this article is about.

Labcorp launched MyLabcorp in May 2026, an app that explains your Labcorp results and tracks trends over time. It does not publish a medication list feature.

On the clinical side, the 2026 European Thyroid Association guideline referenced earlier is the notable document, because it treats pharmaceutical interference as a first-class cause of a wrong thyroid result rather than a footnote. The FDA's biotin materials have not changed since the June 2022 update, and no new medication reconciliation guidance appeared from AHRQ, WHO or NICE in 2026. The Joint Commission renamed its National Patient Safety Goals to National Performance Goals effective 1 January 2026, but the substantive requirement about the written medication list is unchanged in the documents effective that month.

The honest summary is that the products are moving faster than the guidance. Which is the usual pattern, and it is why the medication list on your own phone is worth more than it looks.

What does a doctor-ready medication list need to contain?

Longetic publishes a doctor-ready summary built from your timeline, and the fields two US agencies ask for are a good checklist for whatever you use. The FDA's own form asks for brand and generic name, what it looks like, dose, how and when to use, start and stop dates, the reason you take it, and who prescribed it. AHRQ asks for name, strength, reason, instructions and time of day.

The FDA publishes a consumer form called My Medicine Record, and its scope line is the part most people get wrong: it asks for "ALL prescription (Rx) medicine (include samples), over-the-counter (OTC) medicine, and dietary supplements". The supplement half is exactly where biotin, iron and high-dose vitamins hide, and those are the ones that change the numbers without anybody calling them medication.

Longetic holds medications, diagnoses and doctor visits in the same timeline as the parsed results, and produces a summary you can hand over. What it does not publish, and what we are not going to claim, is a dosing schedule with take-your-medication reminders, a drug interaction checker, or any interpretation of a result: the App Store listing states plainly that it "does not monitor, analyze, assess, interpret, diagnose, predict, or treat any health condition". If the reminder at 8 am is the thing you need, Medisafe, MyTherapy, Guava and KeepMD all publish one and Longetic does not. If you are on Android, Longetic has no Android app, and KeepMD, Guava, CareClinic and CommonHealth do. It is also the medication list a sleep specialist will ask for. If the reason you keep the two lists together is an appointment, seven sections belong in a doctor-ready summary.

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