Comparison

Guide to Diagnostic Tests vs Davis Lab and Diagnostic Tests

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Guide to Diagnostic Tests

Access evidence-based information on over 450 diagnostic tests, including lab work, imaging, and therapeutic monitoring. This resource helps healthcare professionals quickly find answers to common questions about test selection, interpretation, and patient preparation.

Highlights
  • 450+ diagnostic tests
  • Evidence-based recommendations
  • Algorithms, tables, and charts
  • PubMed links
  • Custom notes and highlighting
  • Full-text search
  • Favorites for bookmarking
Features
Read full description

ABOUT GUIDE TO DIAGNOSTIC TESTS Pocket Guide to Diagnostic Tests, provides immediate, evidence-based information on the selection and interpretation of commonly used laboratory and electrocardiographic tests, diagnostic imaging, and therapeutic monitoring. Including more than 450 updated diagnostic tests, this mobile resource is ideal for answering questions encountered daily by physicians, nurses, students, and other healthcare professionals, such as: • Which test is best to diagnose or follow a patient’s condition? • What is the correct interpretation of an abnormal diagnostic test? • How do I collect the appropriate specimen or prepare the patient for testing? • Where can I find more information on this test in the medical literature? FEATURES • 450+ updated laboratory and diagnostic tests • Evidence-based recommendations • New and updated coverage of emerging and re-emerging pathogens and infectious agents • Extensive use of algorithms, tables, and charts • PubMed links directly to journal citations and available articles • Highlight and make custom notes within any entry • Full Text Search – find topics across from any entry • ‘Favorites’ for bookmarking important entries Editors: Diana Nicoll, MD, PhD, MPA; Chuanyi Mark Lu, MD; Stephen J. McPhee, MD Publisher: McGraw Hill Powered by: Unbound Medicine

About

Davis Lab and Diagnostic Tests

This medical reference app provides comprehensive information on lab and diagnostic tests. It helps users understand test procedures, interpret results, and offer quality patient care with detailed nursing implications, common uses, and interfering factors.

Highlights
  • Alphabetical listing of tests
  • Searchable by abbreviation, synonym, disease
  • Potential Nursing Problems tables
  • Common Use explanations
  • Pre-test, intra-test, post-test coverage
  • Patient safety and teaching information
  • Reference ranges in conventional and SI units
Features
Read full description

Nursing-focused and easy-to-read, this manual delivers all the information you need to understand how tests work, interpret their results, and provide quality patient care — pre-test, intra-test, and post-test. Tests and procedures are listed in alphabetical order by their complete name for quick reference. The search feature allows fast searches by abbreviation, synonym, disease/disorder, specimen type, or test classification. Key Features • Fast Find: Lab and Dx—The complete Lab & Diagnostic Test database • Searchable • Mobile and tablet friendly • “Potential Nursing Problems” tables within many studies that present problems, signs and symptoms, and interventions related to the study • ‘Common Use’ for each study to provide an at-a-glance description of what the test is for, presented in everyday language that patients will understand • Studies that focus on what you need to do before, during, and after each laboratory and diagnostic test, including… • Patient Teaching • Detailed coverage of patient safety • “Sensitivity to Social and Cultural Issues” and “Nutritional Considerations,” where appropriate • Diagnostic imaging studies with explanations of the reasons for the test result • Pathophysiology information that explains why a lab test result is increased or decreased • Reference Ranges that are expressed in both conventional and SI units (with the SI unit conversion factor) and include age- and gender-specific variations when indicated and normal variations due to cultural considerations • Interfering Factors, including food, natural products, timing of test, handling of specimen, underlying patient conditions, and drugs that may interfere with the results of the test • Unique coverage of laboratory and diagnostic tests for subspecialties, such as maternity, therapeutic drug monitoring, nutrition and sensory Try before you buy with a 14-day FREE trial. After that it's only $38.99/year for access and continuous content updates. Privacy Policy - https://www.fadavis.com/privacypolicy Terms of Service - https://www.fadavis.com/Termsofuse

Screenshots

Guide to Diagnostic Tests4 screens
Davis Lab and Diagnostic Tests4 screens

Verdict

The call

The clearest difference is rating: Davis Lab and Diagnostic Tests at 5.0 against Guide to Diagnostic Tests's 4.5. Guide to Diagnostic Tests's advantage is ratings volume (36 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Guide to Diagnostic Tests sells 1 one-off in-app purchase and Davis Lab and Diagnostic Tests sells 1 in-app purchase, starting at $38.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Davis Lab and Diagnostic Tests holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Guide to Diagnostic Tests has 36 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Guide to Diagnostic Tests ships an update every 9 months, Davis Lab and Diagnostic Tests every 13 months. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Guide to Diagnostic Tests versus Davis Lab and Diagnostic Tests: the parameters behind the verdict, then further details
ParameterGuide to Diagnostic TestsDavis Lab and Diagnostic Tests
PriceFreeFree
Rating4.5 (36 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings36 — better2
Update frequencyEvery 9 months — betterEvery 13 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size10 MB474 MB
Age rating17+17+
DeveloperUnbound Medicine, Inc.Atmosphere Apps, Inc.

Customer experience

Guide to Diagnostic Tests

All ratings35 ratings
Positive88.6%
Neutral5.7%
Negative5.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Davis Lab and Diagnostic Tests

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Guide to Diagnostic Tests

One-time1
  • Pocket Guide to Diagnostic Tests$54.99
1 purchases

Davis Lab and Diagnostic Tests

Subscriptions1
  • Annual Subscription14 Days trial$38.991 Year

Questions

Is Guide to Diagnostic Tests free?
Guide to Diagnostic Tests is free to download, with in-app purchases available.
Is Davis Lab and Diagnostic Tests free?
Davis Lab and Diagnostic Tests is free to download, with in-app purchases available.
Which has better reviews, Guide to Diagnostic Tests or Davis Lab and Diagnostic Tests?
Davis Lab and Diagnostic Tests is rated higher. Guide to Diagnostic Tests averages 4.5 out of 5 from 36 ratings, while Davis Lab and Diagnostic Tests averages 5.0 from 2 ratings.
Do Guide to Diagnostic Tests or Davis Lab and Diagnostic Tests have ads?
Neither Guide to Diagnostic Tests nor Davis Lab and Diagnostic Tests shows ads.
Which is updated more often, Guide to Diagnostic Tests or Davis Lab and Diagnostic Tests?
Guide to Diagnostic Tests ships an update every 9 months, and Davis Lab and Diagnostic Tests every 13 months. Most recently, Guide to Diagnostic Tests was updated on November 8, 2026 and Davis Lab and Diagnostic Tests on November 3, 2026.

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