CLASS II ONGOING Device recall · Reported 20 Sep 2023 · FDA Enforcement Report

ACL TOP Family 50 Series recalled by Instrumentation Laboratory

Instrumentation Laboratory is recalling ACL TOP Family 50 Series, distributed nationwide in the US. The recall was initiated on 13 Jul 2023 and the FDA has classified it as Class II.

Check your package

Lot, batch or date codesModel Names UDI (1)ACL TOP 550 CTS 08426950729242; (2)ACL TOP 750 CTS 08426950784067; (3)ACL TOP 350 CTS 08426950784081; (4) ACL TOP 750 08426950784074; (5) ACL TOP 750 LAS 08426950784050 (6) ACL TOP 970 CL 08430793045476 Software: 1)ACL TOP 550 CTS v6.3.0 or later; (2)ACL TOP 750 CTS v6.3.0 or later; (3)ACL TOP 350 CTS v6.3.0 or later; (4) ACL TOP 750 v6.3.0 or later; (5) ACL TOP 750 LAS v6.3.0 or later; (6) ACL TOP 970 CL Version 1.1.0 (OUS). UPDATE: 10/16/23 Affected Serial Number Range Start SN End SN ACL TOP 350 CTS 21113058 23074369; ACL TOP 550 CTS 21112046 23072623; ACL TOP 750 22010516 23060671; ACL TOP 750 CTS 21110860 23071015; ACL TOP 750 LAS 21120879 23071077
Quantity recalled2,068 kits US: 6,270 units OUS

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

Recall details

Recall number
Z-2578-2023
FDA event ID
92831
Recalling firm
Instrumentation Laboratory, Bedford, MA
Classification
Class II
Status
Ongoing
Recall initiated
13 Jul 2023
FDA classified
12 Sep 2023
Reported
20 Sep 2023
Type
Voluntary: Firm initiated
Customers notified by
Two or more of the following: Email, Fax, Letter, Press Release, Telephone, Visit
Reason category
Other Reasons

Timeline

13 Jul 2023Recall initiated by company
12 Sep 2023Classified by FDA+61 days
20 Sep 2023Published in enforcement report+8 days

Companies usually start a recall weeks before the FDA classifies and publishes it; the gap above is that lag.

Reason for recall

Sample misidentification could occur under specific conditions and patient management altered based on an incorrectly assigned result

Product as listed by the FDA

ACL TOP Family 50 Series Models as follows: In vitro diagnostic clinical use in the hemostasis laboratory for coagulation and/or fibrinolysis testing in the assessment of thrombosis and/or hemostasis (1) ACL TOP 550 CTS Model Number: 00000280045; (2) ACL TOP 750 CTS Model Number: 00000280055; (3) ACL TOP 350 CTS Model Number: 00000280065; (4) ACL TOP 750 Model Number: 00000280015; (5) ACL TOP 750 LAS Model Number: 00000280035 (6) ACL TOP 970 CL(only available ROW)Model Number: 00000280097

Where it was distributed

Worldwide distribution - US Nationwide and the countries of Canada, Finland, Ireland, Lithuania, Malta, Qatar, Sweden.

Nationwide

Questions about this recall

Why was it recalled?

Sample misidentification could occur under specific conditions and patient management altered based on an incorrectly assigned result

Which lots are affected?

Model Names UDI (1)ACL TOP 550 CTS 08426950729242; (2)ACL TOP 750 CTS 08426950784067; (3)ACL TOP 350 CTS 08426950784081; (4) ACL TOP 750 08426950784074; (5) ACL TOP 750 LAS 08426950784050 (6) ACL TOP 970 CL 08430793045476 Software: 1)ACL TOP 550 CTS v6.3.0 or later; (2)ACL TOP 750 CTS v6.3.0 or later; (3)ACL TOP 350 CTS v6.3.0 or later; (4) ACL TOP 750 v6.3.0 or later; (5) ACL TOP 750 LAS v6.3.0 or later; (6) ACL TOP 970 CL Version 1.1.0 (OUS). UPDATE: 10/16/23 Affected Serial Number Range Start SN End SN ACL TOP 350 CTS 21113058 23074369; ACL TOP 550 CTS 21112046 23072623; ACL TOP 750 22010516 23060671; ACL TOP 750 CTS 21110860 23071015; ACL TOP 750 LAS 21120879 23071077

Where was it sold?

Worldwide distribution - US Nationwide and the countries of Canada, Finland, Ireland, Lithuania, Malta, Qatar, Sweden.

What should I do if I have it?

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

What does Class II mean?

Class II means the product may cause temporary or medically reversible health problems, or the probability of serious harm is remote.

Read the official FDA notice · Source record retrieved 26 Sep 2026. The FDA describes openFDA data as unvalidated; the official notice takes precedence. This page reports the record and gives no medical advice.

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