Quest vs Labcorp lab report layouts: what typically differs
Quest Diagnostics and Labcorp reports both list a test, a result, a unit, a reference range and sometimes a flag, but they typically differ in column order, in whether a flag is a letter or a word, in how ranges are written and in whether a previous result is printed. Layouts also vary by portal, report type and date, so check your own.
Not medical advice. This guide describes what the parts of a lab report are and how they are recorded. It does not say what any result means for a person, and it does not recommend treatment, supplements or targets. BioPanel is not affiliated with or endorsed by either company. The names appear only to describe report layouts.
What typically differs
Neither company prints one fixed report. A PDF from a patient portal, a paper report from a doctor's office and an export inside a hospital system can each look different, and templates change over time. What follows describes common patterns, not rules. Read the column headings of the report you hold.
Quest-style reports typically show test names in capitals, put a letter flag such as H or L beside the result, write some ranges in words, for example < OR = 7.5, and can split results across In Range and Out of Range columns. Labcorp-style reports typically use mixed-case names, print the word High or Low after the result, write ranges as 0-50 or >20, show Not Estab. where no range exists, and often add a column for the previous result and its date.
Both typically print collected, received and reported dates in the header and a performing-lab block at the end, and many reports include a fasting line.
Mapping any layout onto your record
The same six steps work for either.
List the headings
Write down the column headings left to right. They tell you which layout you are reading.
Match each column to a field
Test goes to marker, result to value, unit to unit, range to range text, flag to lab flag. Put a previous-result column in a notes field, not in the value column.
Read the flag in its own style
A letter, a word or a column position can each be the lab's flag. Copy it as printed, whichever form it takes.
Read the range notation
Treat < OR = as less than or equal to, > OR = as greater than or equal to, and Not Estab. as no range printed.
Look up the lab code
A short code in a Lab column names the performing site. The footer often decodes it.
Standardise the dates
Copy collected, received and reported as printed, then write the collection date as YYYY-MM-DD.
Typical differences side by side
Patterns, not rules.
| Feature | Quest-style, typically | Labcorp-style, typically | Check in your record |
|---|---|---|---|
| Test names | Upper case, for example CHOLESTEROL, TOTAL | Mixed case, with abbreviations such as LDL Chol Calc (NIH) | Keep the printed name; add your own standard name |
| Result and flag | A letter such as H or L beside the number | A word such as High after the number | Copy the flag as printed, in its own column |
| Result columns | Sometimes separate In Range and Out of Range columns | Current Result and Flag, then Previous Result and Date | Never read a previous result as the current one |
| Range notation | Words, such as < OR = 7.5 or > OR = 25 | Plain forms such as 0-50 or >20, and Not Estab. when none | Store the text; split only simple intervals |
| Calculated lines | Often marked (calc) | Often Calc or Cal in the name | Record that the value is calculated |
| Dates and fasting | Collected, received, reported, and a fasting line | Date Collected, Date Received, Date Reported, and a fasting line | Record the collection date and the fasting wording |
What goes wrong
Most come from assuming one layout fits every report.
- Copying a previous result. A previous-result column puts the old value beside the new one. Copy from the current column only.
- Missing a flag that is a column. In layouts with an Out of Range column, the column is the lab's mark and there may be no letter.
- Misreading range words. < OR = means less than or equal to, and Not Estab. is not zero.
- Assuming names match. LDL-CHOLESTEROL and LDL Chol Calc (NIH) are the same marker by name, but labs can calculate LDL with different equations. A footnote may name the one used.
- Trusting an old template. A layout seen last year may have changed. Check the headings every time.
- Reading the Lab column as a flag. A short code in a Lab column names a site, not a result status.
How BioPanel helps
BioPanel matches column headings, not a lab's brand. It recognises Current Result and Flag, Previous Result and Date, In Range and Out of Range, reads < OR = and > OR = as limits, and keeps a previous result out of the value column. A result in an Out of Range column with no letter gets the lab flag A. Layouts vary, so check each row against the original lab report. Free: 1 file per day, up to 10 pages, no account. Files over 10 pages are converted up to page 10 on the free allowance; a page code converts the whole file, up to 150 pages. See pricing.
Questions people ask
Do all Quest and Labcorp reports look the same?
No. Portal PDFs, paper reports and hospital exports differ, and templates change over time. The patterns here are typical, so read the headings on the report you hold.
What does < OR = mean in a reference range?
It is a written-out sign for less than or equal to, and > OR = means greater than or equal to. The limit itself is included.
What does Not Estab. mean?
It is typically printed where a lab has not established a reference range for a test. It is not zero and not a blank, so record the words and leave the low and high limits empty.
Why are some values split across In Range and Out of Range columns?
Some layouts place a result in one column or the other as the lab's own mark. The column position is the flag, so record it even when no letter is printed.
What is the Previous Result and Date column?
Some layouts print the last earlier result for the same test, with its date, beside the current one. It is a copy of an older value, so keep it out of the current-value column.
Can BioPanel read both layouts?
BioPanel matches result tables by column heading, including the headings above. Layouts vary and change, so compare each row with the original report.