CallataGuidesBusiness phone system for testing laboratories in Los Angeles, CA
Testing laboratories in the Los Angeles-Long Beach-Anaheim, CA metro area: 342 establishments in 2023, the local area codes, and what phone service costs an 18-person team.
- Establishments
- 342CBP 2023
- Employees
- 6,112mid-March 2023
- Per 100k residents
- 2.6U.S. 2.2
- Rank
- 1st of 339areas by count
The testing laboratory market in Los Angeles, CA
The Census Bureau's 2023 County Business Patterns lists 342 establishments classified as Testing Laboratories (NAICS 541380) in the Los Angeles-Long Beach-Anaheim, CA metro area. Together they reported 6,112 mid-March employees and $425.1 million of payroll for the year. That ranks 1st of the 339 metro and micropolitan areas where Census published a count for this industry.
With 12.9 million residents in the Census 2024 estimate, that is 2.6 testing laboratories per 100,000 people, 20.6% above the national rate of 2.2. Establishments average 17.9 employees, 15.7% below the U.S. average of 21.2. Payroll per employee comes to $69,560, 7.6% below the national $75,284.
| Measure | Los Angeles, CA | California | United States |
|---|---|---|---|
| Establishments | 342 | 956 | 7,463 |
| Mid-March employees | 6,112 | 17,332 | 158,265 |
| Annual payroll | $425,148,000 | $1,315,429,000 | $11,914,875,000 |
| Employees per establishment | 17.9 | 18.1 | 21.2 |
| Payroll per employee | $69,560 | $75,896 | $75,284 |
| Establishments per 100,000 residents | 2.6 | 2.4 | 2.2 |
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.
How big testing laboratories in Los Angeles, CA are
Of the testing laboratories in Los Angeles, CA that had employees in March 2023, 44.7% had fewer than five (the U.S. share is 42.7%). 62.4% had fewer than ten. For a business of a few people, phone coverage is a staffing question as much as a technology one: someone has to be free to pick up, or the call needs somewhere sensible to go.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 152 | 44.7% | 42.7% |
| 5–9 employees | 60 | 17.6% | 18.9% |
| 10–19 employees | 58 | 17.1% | 17.1% |
| 20–49 employees | 44 | 12.9% | 12.8% |
| 50 or more employees | 26 | 7.6% | 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.
What testing laboratories in Los Angeles, CA use the phone for
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.
Typical inbound and outbound calls for testing laboratories in Los Angeles, CA:
- The lab calls a client about a sample issue.
- A manufacturer calls about certification testing.
- A homeowner calls about water testing.
After-hours calls
After-hours calls are mostly routine.
With business-hours routing, calls after closing can go to transcribed voicemail or an optional AI receptionist instead of ringing an empty room.
Callata vs. per-seat pricing for testing laboratories in Los Angeles, CA
The average testing laboratory in Los Angeles, CA has 17.9 employees, so an 18-person team is a reasonable benchmark. Per-seat business phone plans bill every one of those people. At month-to-month list prices checked September 28, 2026, 18 users on RingCentral RingEX Core cost $540.00 a month and 18 on Ooma Office Pro cost $449.10. On Callata the same 18 people cost $359.00 a month, less than either per-seat plan.
The annual difference against RingCentral's monthly list price comes to $2,172. Some vendors discount annual contracts; the table shows month-to-month prices.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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.
Which area code to use in Los Angeles, CA
NANPA records place the exchanges of the area's named cities and towns in 8 area codes. 323 has the most, with 786 of 5,035 exchanges (16%). Callata's plan includes up to 3 local numbers; you can pick them in the area codes your clients recognize, subject to carrier inventory, or port the number you already have for free.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 323 | 786 | Pacific | 1998 | 213, 738 |
| 213 | 780 | Pacific | 1947 | 323, 738 |
| 714 | 777 | Pacific | 1951 | 657 |
| 626 | 722 | Pacific | 1997 | none |
| 657 | 643 | Pacific | 2008 | 714 |
| 562 | 541 | Pacific | 1997 | none |
| 949 | 454 | Pacific | 1998 | none |
| 310 | 332 | Pacific | 1991 | 424 |
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.
What testing laboratories in Los Angeles, CA get with Callata
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.
If you already have a number in Los Angeles, CA, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Frequently asked questions
How many testing laboratories are there in Los Angeles, CA?
Census County Business Patterns counted 342 testing laboratories in the Los Angeles-Long Beach-Anaheim, CA metro area in 2023. They employed 6,112 people in mid-March.
What does a business phone system cost for an 18-person testing laboratory?
At month-to-month list prices checked September 28, 2026, 18 users cost $540.00 a month on RingCentral RingEX Core and $449.10 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $359.00.
What area code should a testing laboratory in Los Angeles, CA use?
Area code 323 has the most assigned exchanges among the area's named places, followed by 213 and 714. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for a testing laboratory?
Yes. Callata's optional AI agents can answer when the team is busy or closed, take a message, text, email or transfer the call. They disclose that they are AI and are billed from prepaid AI minutes at $0.25 per minute.