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Business phone system for testing laboratories in Maryland

112 testing laboratories operated in Maryland in 2023. Where they are, how big their teams are, and what phone service costs them.

Establishments
112CBP 2023
Employees
1,365mid-March 2023
Per 100k residents
1.8U.S. 2.2
State rank
22nd of 51by count

The testing laboratory industry in Maryland

County Business Patterns counts 112 establishments in Maryland classified as Testing Laboratories (NAICS 541380) for 2023. They employed 1,365 people in mid-March and reported $111.1 million in annual payroll. That is the 22nd highest count among the 51 states and DC with published figures. Testing laboratories make up 0.08% of the 142,967 business establishments in the state.

Per 100,000 residents (2024 estimate) Maryland has 1.8 testing laboratories, 18.5% below the national rate of 2.2. The average establishment has 12.2 employees against 21.2 nationally. Payroll per employee is $81,427, 8.2% above the U.S. figure of $75,284.

Testing laboratories: Maryland compared with the U.S., 2023
MeasureMarylandUnited States
Establishments1127,463
Mid-March employees1,365158,265
Annual payroll$111,148,000$11,914,875,000
Employees per establishment12.221.2
Payroll per employee$81,427$75,284
Establishments per 100,000 residents1.82.2

Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.

Maryland's largest markets for testing laboratories

Census published testing laboratory counts for 5 metro or micropolitan areas that include part of Maryland. The largest is Philadelphia, PA-NJ-DE-MD, with 113 establishments (a multi-state area; its count covers every state it spans). Single-state metro and micropolitan areas account for 59% of the statewide total; the rest are outside any published area or in areas Census suppressed.

Testing laboratories by metro or micropolitan area, Maryland, 2023
AreaEstablishmentsEmployeesPer 100k residents
Philadelphia, PA-NJ-DE-MD1133,3341.8
Washington, DC-VA-MD-WV881,1101.4
Baltimore, MD627302.2
Lexington Park, MD4281.9
Cumberland, MD-WV3483.2

Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.

Team sizes at testing laboratories in Maryland

47.7% of Maryland's testing laboratories with employees had fewer than five people in March 2023, compared with 42.7% nationally. 66.7% had fewer than ten. At that size the phone is shared, so routing (who rings, when, and what happens after hours) matters more than the number of desk phones.

Testing laboratories in Maryland by employment size, 2023
Employment sizeEstablishmentsShareU.S. share
1–4 employees5347.7%42.7%
5–9 employees2118.9%18.9%
10–19 employees1917.1%17.1%
20–49 employees1513.5%12.8%
50 or more employees32.7%8.6%

Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.

Why the phone matters for testing laboratories in Maryland

Testing labs serve contractors, manufacturers and property owners who need results on a schedule. Calls about sample drop-off, turnaround and results need quick routing. That holds for testing laboratories in Maryland as much as anywhere.

Typical inbound and outbound calls for testing laboratories in Maryland:

Texting clients

Labs text sample receipt and results-ready notices.

Texting from a local number in Maryland requires carrier registration (10DLC), a one-time $49 fee on Callata.

Phone system pricing for a 12-person testing laboratory

Testing laboratories in Maryland average 12.2 employees, so the comparison uses a 12-person team. Priced per seat, 12 users would run $360.00 a month on RingCentral RingEX Core and $299.40 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). Callata comes to $239.00 a month for 12 users ($99 a month with 5 users included, then $20 per additional user), below both.

Over a year, that is $1,452 less than RingCentral for a testing laboratory in Maryland of that size. Annual contracts lower some competitors' prices, so compare the plan you would actually sign.

Monthly list price for a 12-person testing laboratory
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$239.00$2,868.00
Quo (Starter)$19.00 per user$228.00$2,736.00
Nextiva (Core)$23.00 per user$276.00$3,312.00
Ooma (Office Pro)$24.95 per user$299.40$3,592.80
Dialpad (Standard)$27.00 per user$324.00$3,888.00
RingCentral (RingEX Core)$30.00 per user$360.00$4,320.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Area codes in Maryland

Maryland has 6 geographic area codes in service according to NANPA. Callata includes up to 3 local numbers, so a testing laboratory can hold a number in more than one of them.

Area codes in Maryland by assigned exchanges
Area codeExchangesTime zoneIn service sinceOverlay with
240785Eastern1997227, 301
443785Eastern1997410, 667
301784Eastern1947240, 227
410783Eastern1991443, 667
667452Eastern2012410, 443
227141Eastern2023240, 301

Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.

How Callata works for testing laboratories in Maryland

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

Porting a number you already use in Maryland is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

Frequently asked questions

How many testing laboratories are in Maryland?

112 in 2023, according to Census County Business Patterns. They employed 1,365 people in mid-March.

Which Maryland metro area has the most testing laboratories?

Philadelphia, PA-NJ-DE-MD, with 113 establishments in 2023.

What does a phone system cost a 12-person testing laboratory?

$360.00 a month on RingCentral RingEX Core or $299.40 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $239.00 on Callata ($99 a month with 5 users included, then $20 per additional user).

Do I need to register to text customers from a Maryland number?

Yes. US carriers require business texting from local numbers to be registered (10DLC). On Callata the registration is a one-time $49 fee, and texting turns on once it is approved.